Safety Communication Function; Communications With Safety Stations - Mitsubishi Electric RD77GF8 User Manual

1.6

Safety Communication Function

This section describes the safety communication function.
Following modules are required to use the safety communication function.
• Safety CPU
• Safety function module
The safety communication function cannot be used in a system containing a submaster station.

Communications with safety stations

This function establishes a safety connection and enables one-on-one safety communications periodically between safety
stations in the same network.
The safety device of the Safety CPU is used for data communication.
Whether a safety connection is established or not can be checked in "Safety refresh communication status of each safety
connection (1st module)" (SA\SD1008 to SA\SD1015) of the Safety CPU.
*1 Safety special registers for the first Simple Motion module. For the safety special register for the second or later Simple Motion module,
refer to the following.
MELSEC iQ-R CPU Module User's Manual (Application)
Stations supporting safety communications
Safety communications can be performed between the following stations (safety stations).
• Master station (safety station) (1)  local station (safety station) (2)
• Master station (safety station) (1)  remote device station (safety station) (3)
(1)
(2)
Safety communications
Safety station and standard station (5) can be mixed in one network. However, safety communications cannot
be performed with standard stations (5).
Safety communications with safety stations of the MELSEC-QS series (4) cannot be performed.
1 FUNCTIONS
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1.6 Safety Communication Function
(3) (4)
Standard communications
*1
(5)