3 COMMON PARAMETERS

3.2.2 I/O number of each CPU modules

In the Multiple CPU system, I/O numbers are assigned to each CPU module to specify installed CPU modules.

The I/O number for each CPU module is fixed to the corresponding slot and cannot be changed.

The I/O number allocated to each CPU module in the Multiple CPU system is shown below.

CPU module

CPU slot

Slot 0

Slot 1

Slot 2

installation position

 

 

 

 

First I/O number

3E00H

3E10H

3E20H

3E30H

The I/O number of PLC CPU/Motion CPU are used in the following cases.

•When writing data to the CPU shared memory of self CPU using the S. TO instruction.

•When reading data from the CPU shared memory of other CPU using the FROM instruction.

•When reading data from the CPU shared memory of other CPU using an intelligent function module device (U\G)

•When reading device data directly from the Motion CPU from the PLC CPU using the "D(P).DDRD" instruction.

•When writing device data directly to the Motion CPU from the PLC CPU using the "D(P).DDWR" instruction.

Refer to Section 2.3.6 or the "Q173DCPU/Q172DCPU Motion controller (SV13/SV22) Programming Manual (Motion SFC)" for the Motion dedicated PLC instruction.

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