GE VersaMax PLC, User Manual

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1.7.3 DeviceNet Network Control Module
The DeviceNet Network Control Module (IC200BEM103) is a communications module
that can be configured to operate as a master, as a slave, or as both simultaneously. It can
exchange up to 512 bytes of input data and 512 bytes of output data with other devices on
the DeviceNet network. The VersaMax PLC CPU can read and write this data as though it
were conventional bit- and word-type I/O data.
The Network Control Module operates as a Group 2 Only Client (master) and can
communicate only with Group 2 Slave devices. It can also operate as a Group 2 Only or a
UCMM-capable Server (slave), or as a master and slave simultaneously.
For information about the DeviceNet Network Control Module, refer to the VersaMax
System DeviceNet Network Communications User Manual (GFK-1533).
1.7.4 Asi Network Master Module
The VersaMax AS-Interface Network Master (IC200BEM104) conforms to the
AS-Interface Specification for the master AS-Interface protocol. It can be used to connect
a VersaMax PLC or I/O station NIU to an Actuator-Sensor network.
The AS-Interface module supports communications with up to 31 slave devices,
exchanging to exchange up to 4 bits of input data and 4 bits of output data per slave
address on the Actuator-Sensor network.
For information about the AS-Interface Network Master Module, refer to the VersaMax
System ASI Network Communications User Manual (GFK-1697).
1.7.5 Serial Communications Module
The VersaMax Serial Communications Module, IC200CMM020, operates as a Modbus
RTU Master in a VersaMax I/O Station. The Serial Communications module receives
commands from a remote host such as an RX7i PLC.
30 GFK-1503E VersaMax PLC User Manual
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