Rmc register map (allen-bradley), Rmc register map (allen-bradley) -69 – Delta RMC101 User Manual

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Ethernet 5.2

Communications

5-69

Using the Examine If Open instruction as shown below fulfills two requirements of continuous MSG
transactions. First, it will keep the block energized until the EN turns on, and second, it de-energizes
the MSG block once the transactions is started so that when the transaction is completed (EN goes
low again), the MSG block sees a rising edge on its input, thus repeating the transaction:

Read or Write Once

This sample takes care to keep the MSG block energized until the MSG block starts, as indicated by
the enable (EN) bit turning on. Once this happens, the application-controlled TriggerOnce coil is
turned off. The message control's Done (DN) or Error (ER) bits can be used to process the results of
the transaction.

5.2.6.1.2 RMC Register Map (Allen-Bradley)

Tip:

RMCWin's Address Tool provides an easy way to identify addresses in the RMC. Simply open

the Address Tool and then move the cursor to any field in RMCWin that represents an RMC Register,
and the Address Tool will display the address in the address format of your choice. See Address Tool
for details.

The RMC module has 64K (65536) 16-bit registers that can be read from or written to over
Ethernet, Serial, Modbus Plus, and PROFIBUS-DP. Each register is assigned an address.
However, under the different communication methods, different addressing schemes are used.
This topic describes using Allen-Bradley PLC addressing. For details on addressing from other
modules refer to the following topics: