Mitsubishi MOTION CONTROLLERS Q172DCPU Instruction Manual download pdf (Page 66)

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2 MULTIPLE CPU SYSTEM

2.3.4 Clock synchronization between Multiple CPU

The clock of each CPU is synchronized with the clock of CPU No. 1.

The clock data used for synchronization in a Multiple CPU system can be edited.

(1) Setting of clock data

Set the clock of CPU No.1. The Motion CPU module operates automatically by

the clock of CPU No.1.

POINT

The clock data of CPU No.1 is automatically set even if the clocks of CPU No. 2 to

4 are set independently.

(2) Synchronization of clock data

All clocks are synchronized with CPU No.1 immediately after turning

ON/resetting power and every 1-second interval thereafter.

(3) Information of clock

The clock data that CPU No. 1 transmits is year, month, day, day of week, hour,

minute and second.

(4) Error

Since CPU No.1 sets the clock data at 1-second intervals, an error of up to 1

second may occur to the clock of CPU No.2 to 4.

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Mitsubishi MOTION CONTROLLERS Q172DCPU Instruction Manual Page 66