Programming; Programming Precautions; Interlock Related Signals - Mitsubishi Electric Q Series Reference Manual

6 PROGRAMMING

6 PROGRAMMING
When applying any of the program examples introduced in this chapter to the actual
system, verify the applicability and confirm that no problems will occur in the system
control.

6.1 Programming Precautions

This section explains the precautions in creating programs using data on the network.

6.1.1 Interlock related signals

A list of the interlock signal devices used in the sequence programs is provided below.
See Appendix 3, "List of the Link Special Relays (SB)" and Appendix 4, "List of the Link
Special Registers (SW)" for other explanations, such as the operation status and
setting status of the host and other stations.
When multiple network modules are installed, the interlock signal devices are
refreshed to the devices on the CPU side at 512 points (0
according to the default settings as shown below.
The Q series uses the link special relays (SB) and the link special registers (SW) in
the entire intelligent function module. Therefore, it is important to manage SB/SW
properly so that duplicate SBs and SWs are not used in a program.
Assignments of the link special relay (SB) and the link special register
(SW) when multiple modules are installed
Device
6 - 1
POINT
Mounting
Position
1st module
SB 0
H
SW 0
H
2nd module
to 1FF 200 to 3FF
H H H
to 1FF 200 to 3FF
H H H
MELSEC-Q
to 1FF ) intervals
H H
3rd module 4th module
400 to 5FF 600 to 7FF
H H H
400 to 5FF 600 to 7FF
H H H
6 - 1
6
H
H