Details Of Input Signals - Mitsubishi Electric MELSEC QS Series User Manual

8
PROGRAMMING SPECIFICATIONS

8.1.2 Details of input signals

The following explains the on/off timings and conditions of the input signals shown in
Table8.1:
(1) Module error: Xn0
Module error
( Xn0)
Module ready
( XnF)
(2) Host data link status: Xn1
(3) Other station data link status: Xn3
8
- 3 8.1 I/O Signals used for Safety CPU Module
8.1.2 Details of input signals
This signal indicates whether the module is normal or faulty.
OFF : Module normal
ON : Module error
This signal indicates the data link status of the host station.
OFF : Data link is stopped
ON : Data linking in progress
This signal indicates data link status of other stations (safety remote I/O stations,
standard remote I/O stations and remote device stations).
The SB0080 signal has the same contents.
OFF : All stations normal
ON : There is a faulty station (The faulty station status data is stored in SW0080 to
SW0083)
POINT
It takes up to 6 seconds from when a slave station error is identified in the safety
master station until the Other station data link status (Xn3) turns ON.
The time spent to turn it ON varies depending on the system configuration and the
error status.