Safety Communication Function - Mitsubishi Electric MELSEC Q Series Programming Manual

1 OVERVIEW

1.4.7 Safety communication function

(1) The safety communication function cannot detect an incorrect servo amplifier
station number setting. Check that the station number setting for the Motion
control program and the axis select rotary switch setting of servo amplifier match.
(2) For servo amplifiers that support the safety communication function, check that
safety communication is connected. Refer to Section 2.9.5 for details.
(3) To ensure that PLC CPU executes the safety communication function within the
safety communication cycle (refer to Section 3.4.1 (4) (c)), make a sequence
program with the maximum scan time less than or equal to the value below. If the
scan time of the sequence program exceeds the value below, add more PLC
CPUs and distribute the processes.
Maximum scan time ≤ (safety communication cycle - 3.555[ms])
(4) Safety communication function can only be used with SSCNET /H
communication. Safety communication function cannot be used with SSCNET
communication.
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