Connecting the DC551 and S500 I/O Devices to the CS31 Bus¶
The basic module DC551-CS31 is available in two versions in Automation Builder:
DC551-CS31 8 DI + 16 DC / without Fast Counter
The addresses 00…69 can be set at the module and in Automation Builder.
DC551-CS31 8 DI + 16 DC + 2FC / with 2 Fast Counters
The hardware addresses 70…99 can be set at the module. This corresponds to the module addresses 00…29 with activated counter. In Automation Builder and at the Function Block CNT_DC551, the module address (00..29) is set.
For more information, see documentation of Function Block CNT_DC551 in Library Documentation.
| Parameter | Default value | Value | Description |
|---|---|---|---|
Ignore module |
No | No | It is checked whether the module exists on the CS31 Bus. |
| Yes | Module is not checked. -> available as of CPU firmware V1.2.0 and PS501 V1.2 | ||
| Module address | 0 | 0…69 | Module address of the DC551-CS31 without fast counter |
| 0…29 | Module address of the DC551-CS31 with fast counter | ||
Error-LED |
On | On | The error LED lights up for errors of all classes, no failsafe function activated. |
| Off_by_E4 | Warnings (E4) are not indicated by the error LED, no failsafe function activated. | ||
| Off_by_E3 | Warnings (E4) and light errors (E3) are not indicated by the error LED. No failsafe function activated. | ||
| On+failsafe | The error LED lights up for errors of all classes and the failsafe function of the CS31 Bus is activated. -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
| Off_by_E4+failsafe | Warnings (E4) are not indicated by the error LED, the failsafe function of the CS31 Bus is activated. -> available as of CPU firmware V1.2.0, DC551 firmware V1.9 and PS501 V1.2 | ||
| Off_by_E3+failsafe | Warnings (E4) and light errors (E3) are not indicated by the error LED, the failsafe function of the CS31 bus is activated. -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
| Check supply | On | On | Control voltage monitoring ON |
| Off | Control voltage monitoring OFF | ||
| Input delay | 8 ms | 0.1 / 1 / 8 / 32 ms | Input delay 0.1 / 1 / 8 / 32 ms |
Fast counter |
0-No counter | 0-No counter | Operation mode of the fast counter Fast Counters: Fast Counters The Fast Counters in the AC500 |
| Detection short-circuits at outputs | On | On | Output short-circuit detection ON |
| Off | Output short-circuit detection OFF | ||
Behaviour of outputs at communication fault |
Off | Off | Behavior of outputs at communication faults on the CS31 Bus OFF |
| Last value | Last value -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
| Substitute value | Substitute value -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
| Last value 5 sec. | Last value for 5 seconds -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
| Substitute value 5 sec. | Substitute value for 5 seconds -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
| Last value 10 sec. | Last value for 10 seconds -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
| Substitute value 10 sec. | Substitute value for 10 seconds -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 | ||
Substitute value |
0 | 0…65535 0000hex…FFFFhex |
Substitute value for the outputs, one bit per output, bit 0=C8 .. bit 15=C23 -> available as of CPU firmware V1.2.0, DC551-CS31 firmware V1.9 and PS501 V1.2 |
No Counter
Note
If a DC551 is configured as a Fast Counter module and ‘0 - no Counter’ in the Automation Builder is selected the channel ERR LEDs stays on and the module does not start up. The address was adjusted with ‘71’. Only the‘0- no Counter’ mode does not operate. If any other counter is selected e.g. ‘1-1 Up counter’ the module starts up and can be utilized.
Failsafe Function of CS31 Bus
The setting of the parameter Behaviour of outputs in communication fault directly influences the failsafe function of the outputs of the S500 I/O devices.
To connect further S500 I/O Modules to the basic module DC551-CS31 via the I/O Bus, see the following steps.
Right-click the element DC551-CS31 in the configuration tree and select the menu item Add device.
- ⇒
The Add Device dialog window appears. It shows all available I/O Modules that can be added to DC551-CS31.
Choose the modules you want to attach to DC551-CS31.
A maximum of 7 expansions with a total of 240 DI / 240 DO and 40 AI / 40 AO can be appended to the module.
When addressing S500 I/O devices at the CS31 bus, observe the following peculiarities concerning the CS31 bus in the AC500.
A CS31 software module can occupy a maximum of -> 15 bytes of inputs and 15 bytes of outputs in the digital area. This corresponds to 15 x 8 = 120 digital inputs and 120 outputs.
A CS31 software module can allocate a maximum of -> 8 words of inputs and 8 words of outputs in the analog area.
A maximum of 31 of these CS31 software modules are allowed for connection to the CS31 bus.
If a device has more than 15 bytes or 8 words of inputs or outputs, it occupies 2 or more of the 31 CS31 software modules.
The DC551-CS31 can internally manage 2 CS31 software modules in the digital area and 5 CS31 software modules in the analog area. This corresponds to a maximum of: 240 digital inputs (2 x 15 bytes), 240 digital outputs (2 x 15 bytes), 40 analog inputs (5 x 8 words) and 40 analog outputs (5 x 8 words).
Address setting is done at the DC551-CS31 using two rotary switches at the module’s front plate.
To enable the fast counter of the DC551-CS31, the hardware address (HW_ADR) has to be set to the module address + 70. With activated fast counter, the module addresses 0..28 (hardware address setting 70..98) are allowed. Then, the DC55-CS31 registers as 2 CS31 software modules using the module address (hardware address 70), once in the digital area and once in the analog area.
CS31 software module 1 in digital area: Registers using the module address.
CS31 software module 2 in digital area: Registers using module address+7 and bit “Channel >= 7” set.
CS31 software module 1 in analog area: Registers using the module address.
CS31 software module 2 in analog area: Registers using module address and bit “Channel >= 7” set.
CS31 software module 3 in analog area: Registers using the module address+1.
CS31 software module 4 in analog area: Registers using module address+1 and bit “Channel >= 7” set.
The DC551-CS31 can manage a maximum of 255 parameters. This does not cause any restrictions in all configurations with the currently available S500 I/O Devices.
The next free address for a DC551-CS31 is derived from the highest address occupied in the digital area or the analog area of the previous DC551-CS31.
When connecting several S500 expansion modules to a DC551-CS31 via the I/O Bus, their inputs and outputs follow the DC551-CS31’s inputs and outputs without gap. Such a cluster can occupy up to 6 CS31 software modules.
A maximum of 7 S500 expansion modules (extensions) can be connected to a DC551-CS31.
Possible configuration consisting of two combined input/output modules.
Note
The Fast Counters of the input/output Modules (e.g. “DC532”) are only available if the modules are connected to the CPU’s I/O Bus.
Summary of Input/Output Data of S500 I/O Devices\ \ \
| Device | ID | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | ||||
| CD522 | 1805 | 2 DI + 2 DI (encoder) + 8 DC + 2 DO PWM | 6 | 7 | 8 | 8 | 6 |
| DA501 | 1810 | 16 DI + 8 DC + 4 AI + 2 AO | 3 | 1 | 5 | 2 | 8 |
| DC551 | 2716 | 8 DI + 16 DC | 3 | 2 | 0 | 0 | 15 |
| DC551+FC | 2715 | 8 DI + 16 DC + FC | 5 | 4 | 4 | 8 | 16 |
| AI523 | 1515 | 16 AI | 0 | 0 | 16 | 0 | 36 |
| AI531 | 1535 | 8 AI | 0 | 0 | 8 | 1 | 36 |
| AO523 | 1510 | 16 AO | 0 | 0 | 0 | 16 | 41 |
| AX521 | 1505 | 4 AI + 4 AO | 0 | 0 | 4 | 4 | 23 |
| AX522 | 1500 | 8 AI + 8 AO | 0 | 0 | 8 | 8 | 39 |
| DC522 | 1220 | 16 DC | 2 | 2 | 0 | 0 | 8 |
| DC523 | 1215 | 24 DC | 3 | 3 | 0 | 0 | 10 |
| DC532 | 1200 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 8 |
| DI524 | 1000 | 32 DI | 4 | 0 | 0 | 0 | 4 |
| DX522 | 1210 | 8 DI + 8 DX | 1 | 1 | 0 | 0 | 6 |
| DX531 | 1205 | 8 DI + 4 DX | 1 | 1 | 0 | 0 | 6 |
| Device | ID | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | ||||
| DI561 | 6105 | 8 DI, 24 V DC | 1 | 0 | 0 | 0 | 0 |
| DI562 | 6110 | 16 DI, 24 V DC | 2 | 0 | 0 | 0 | 0 |
| DI571 | 6115 | 8 DI, 100-240 V AC | 1 | 0 | 0 | 0 | 0 |
| DO561 | 6120 | 8 DO 24 V DC, 0.5 A, transistor | 0 | 1 | 0 | 0 | 0 |
| DO571 | 6125 | 8 DO, up to 240 V AC/DC, 2.0 A, relay | 0 | 1 | 0 | 0 | 1 |
| DO572 | 6130 | 8 DO, 100-240 V AC, 0.5 A, triac | 0 | 1 | 0 | 0 | 0 |
| DX561 | 6135 | 8 DI 24 V DC + 8 DO 24 V DC, 0.5 A, transistor | 1 | 1 | 0 | 0 | 0 |
| DX571 | 6140 | 8 DI 24 V DC + 8 DO, up to 240 V AC/DC, 2.0 A, relay | 1 | 1 | 0 | 0 | 1 |
| DC561 | 6100 | 24 DC, 24 V DC, 0.1 A, Interfast connection | 2 | 2 | 0 | 0 | 0 |
| AI561 | 6500 | 4 AI, U/I. configurable | 0 | 0 | 4 | 0 | 6 |
| AI562 | 6505 | 2 AI, RTD, configurable | 0 | 0 | 2 | 0 | 4 |
| AI563 | 6510 | 4 AI, thermocouple, configurable | 0 | 0 | 4 | 0 | 6 |
| AO561 | 6515 | 2 AO, U/I, configurable | 0 | 0 | 0 | 4 | 4 |
| AX561 | 6520 | 4 AI, U/I + 2 AO, U/I, configurable | 0 | 0 | 8 | 4 | 8 |
Examples of Impossible Configurations\ \ \
Due to the peculiarities concerning the CS31 bus and the DC551-CS31 described at the beginning of this chapter, some configurations cannot be realized.
Example: DC551-CS31 + 6 x DC532\ \ \
This configuration is not possible because the DC551-CS31 can manage a maximum of 30 bytes in the digital area (= 120 inputs/outputs).
| Device | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | |||
| DC551 | 8 DI + 16 DC | 3 | 2 | 0 | 0 | 15 |
| DC532 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 9 |
| DC532 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 9 |
| DC532 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 9 |
| DC532 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 9 |
| DC532 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 9 |
| DC532 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 9 |
| DC532 | 16 DI + 16 DC | 4 | 2 | 0 | 0 | 9 |
Example: DC551-CS31 + 6 (or more) AX522\ \ \
This configuration is not possible because the DC551-CS31 can manage a maximum of 40 words in the analog area. For 7 AX522, the number of analog channels increases accordingly.
| Device | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | |||
| DC551 | 8 DI + 16 DC | 3 | 2 | 0 | 0 | 15 |
| AX522 | 8 AI + 8 AO | 0 | 0 | 8 | 8 | 40 |
| AX522 | 8 AI + 8 AO | 0 | 0 | 8 | 8 | 40 |
| AX522 | 8 AI + 8 AO | 0 | 0 | 8 | 8 | 40 |
| AX522 | 8 AI + 8 AO | 0 | 0 | 8 | 8 | 40 |
| AX522 | 8 AI + 8 AO | 0 | 0 | 8 | 8 | 40 |
| AX522 | 8 AI + 8 AO | 0 | 0 | 8 | 8 | 40 |
Example: DC551-CS31 + 3 (or more) AO523\ \ \
This configuration is not possible because the DC551-CS31 can manage a maximum of 40 words in the analog area. For each further AO523, the number of analog channels increases accordingly.
| Device | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | |||
| DC551 | 8 DI + 16 DC | 3 | 2 | 0 | 0 | 15 |
| AO523 | 16 AO | 0 | 0 | 0 | 16 | 42 |
| AO523 | 16 AO | 0 | 0 | 0 | 16 | 42 |
| AO523 | 16 AO | 0 | 0 | 0 | 16 | 42 |
Example: DC551-CS31 + 3 (or more) AI523\ \ \
This configuration is not possible because the DC551-CS31 can manage a maximum of 40 words in the analog area. For each further AI523, the number of analog channels increases accordingly.
| Device | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | |||
| DC551 | 8 DI + 16 DC | 3 | 2 | 0 | 0 | 15 |
| AI523 | 16 AI | 0 | 0 | 16 | 0 | 37 |
| AI523 | 16 AI | 0 | 0 | 16 | 0 | 37 |
| AI523 | 16 AI | 0 | 0 | 16 | 0 | 37 |
Example: DC551-CS31 with FC + 3 (or more) AO523\ \ \
This configuration is not possible because the DC551-CS31 can manage a maximum of 40 words in the analog area. For each further AO523, the number of analog channels increases accordingly.
| Device | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | |||
| DC551 | 8 DI + 16 DC + FC | 5 | 4 | 4 | 8 | 16 |
| AO523 | 16 AO | 0 | 0 | 0 | 16 | 42 |
| AO523 | 16 AO | 0 | 0 | 0 | 16 | 42 |
| AO523 | 16 AO | 0 | 0 | 0 | 16 | 42 |
Example: DC551-CS31 with FC + 3 (or more) AI523\ \ \
This configuration is not possible because the DC551-CS31 can manage a maximum of 40 words in the analog area. For each further AI523, the number of analog channels increases accordingly.
| Device | I/O range | Digital area [Byte] | Analog area [Words] | Parameter [Byte] | ||
|---|---|---|---|---|---|---|
| Inputs | Outputs | Inputs | Outputs | |||
| DC551 | 8 DI + 16 DC + FC | 5 | 4 | 4 | 8 | 16 |
| AI523 | 16 AI | 0 | 0 | 16 | 0 | 37 |
| AI523 | 16 AI | 0 | 0 | 16 | 0 | 37 |
| AI523 | 16 AI | 0 | 0 | 16 | 0 | 37 |