Overview

Communication Modules are required for a connection to standard field bus systems and for integration into existing networks.

AC500 Communications Modules enable communication on different field busses. The Communication Modules are mounted on the left side of the Processor Module on the same Terminal Base. The communication between the Processor Module and the Communication Modules take place through the communication module bus which is integrated in the Terminal Base. The data interchange is realized by a dual-port RAM. Depending on the used Terminal Base: TB51x-TB54x

There are no restrictions, which Communication Modules can be arranged for a Processor Module.

Depending on the selected communication protocol, each Communication Module can be used as Bus master within the AC500 control system together with several field busses and networks. The following name extensions of the device name distinguishes the supported field bus/protocol:

  • CMxyz-ETH: Ethernet
  • CMxyz-DP: PROFIBUS®
  • CMxyz-PNIO: PROFINET®
  • CMxyz-ETHCAT: EtherCAT®
  • CMxyz-DN: DeviceNet™
  • CMxyz-CN: CANopen®
  • CMxyz-RCOM: RCOM/RCOM+ protocol (and 2 serial interfaces)
  • CMxyz-RS: 2 serial interfaces (COM1/COM2)

If a XC version of the device is available, for usage in extreme ambient conditions (e.g. wider temperature and humidity range), this is indicated with a snowflake sign.

In a master-slave-arrangement a Communication Module usually acts as a master devices, however, some Communication Modules act as a slave device. In this case, the Communication Module allows communication of multiple Processor Modules within the network.

The Communication Modules are directly powered over the internal communication module bus of the Terminal Base. A separate voltage source is not required.

Warning

:strong:Removal/Insertion under power

The devices are not designed for removal or insertion under power. Because of unforeseeable consequences, it is not allowed to plug or unplug devices with the power being ON.

Make sure that all voltage sources (supply and process voltage) are switched off before you are

  • connecting or disconnecting any signal or terminal block
  • removing, mounting or replacing a module.

Disconnecting any powered devices while energized in a hazardous location could result in an electrical arc, which could create a flammable ignition resulting in fire or explosion.

Be sure that power is removed and that an area has been thoroughly checked to insure that flammable materials are not present prior to proceeding.

The devices must not be opened when in operation. The same applies to the networking interfaces.