6

Completing the Logicmaster 90 Configuration

Logicmaster 90 configuration steps for a PLC In a GMR system are the same as for a non-GMR system. A typical configuration is summarized on the following pages. You should refer to the Logicmaster 90 Software User's Manual for detailed configuration instructions.

Since the configuration and program for the redundant PLCs in a GMR system are nearly identical, it is easiest to complete the configuration (and program) for one PLC, then copy and edit them for the other PLCs.

HOne necessary change in the configuration is to edit the serial bus addresses (also referred to in other Genius documentation as ªdevice numbersº of the Bus Controllers). See below.

HGenius I/O blocks use the same reference addresses in each of the redundant PLCs, so reference addresses are not changed from PLC to PLC.

It is very important to be sure that entries made during Logicmaster configuration match similar entries made during GMR configuration. Complete the GMR configuration first, print it out, and use the printout for reference during the Logicmaster configuration.

Configuring Bus Controllers

A Series 90-70 PLC can have up to 31 Genius bus controllers. In a GMR system, bus controllers perform the dual function of supporting Genius I/O and providing inter-PLC communications. The number of bus controllers supporting GMR functions in a GMR system must be the same in each PLC. Other, non-GMR, bus controllers can be added to an individual PLC configuration.

All Genius bus controllers that are included in the GMR system must be assigned serial bus addresses (device numbers) as follows:

PLC A

bus address 31

PLC B

bus address 30

PLC C

bus address 29

For example, if the system consists of three PLCs with two triple-bus GMR I/O subsystems, each PLC would require six bus controllers. All six in PLC A would have to be configured at bus address 31, all six in PLC B at bus address 30, and all six in PLC C at bus address 29.

PLC A

PLC B

PLC C

31 31 31

31 31

31

30

30

30

30

30

30

29

29

29

29

29

29

GFK-0787B

Chapter 6 Configuration

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Image 133
GE GFK-0787B user manual Completing the Logicmaster 90 Configuration, Configuring Bus Controllers