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100

101

RMC100 and RMCWin User Manual

5-204

6th-9th

Routing 2-5

: Unused. Set to zeros.

Example

Suppose that you wish to read four global data registers from each of the first four axes of the

RMC located at node address 3. The commands to write are located in holding register 400400

through 400423. You must first choose a location for the 9-register control block. In this example,

400120 to 400128 is the location. The following MSTR block would be used:

As you can see, this function block indicates it will do an operation using the control block

beginning at 400120, using up to 32 registers beginning at 400300. The next step is to set up the

control block:

Content

400120

6 (decimal): Operation type: Read global data

400121

0000 (hex): Error status: filled in by function

400122

16 (decimal): Length: we want the first 16

registers

400123

0 (decimal): Available Registers: filled in by

function

400124

3 (decimal): Routing 1 (Node address)

400125-8

0 (decimal): Unused

5.3.7.5 MSTR Block Peer Cop Health Operation

For general information on the MSTR Block, see Using the MSTR Modicon Ladder Logic Block.

Note: This operation is only available for Modbus Plus and not Modbus/TCP.

This operation reads a portion of a 12-register Peer Cop Health table. For a description of Peer

Cop, see Using Modicon’s Peer Cop to Read Global Data. This table consists of a collection of

one bit per node address for each of three types of Peer Cop transfer. For the RMC, only the

Global Input portion is useful since Specific Inputs and Outputs are not used. Each bit that is set

indicates that the device with that address is connected using Peer Cop:

1 2 ... 449 450 451 452 453 454 455 456 457 458 459 ... 950 951

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