Chapter 3 Programming; Precautions For Programming - Mitsubishi Electric MELSEC iQ-R Series User Manual

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PROGRAMMING
3.1

Precautions for Programming

This section describes the precautions for creating RJ71LP21-25 programs.
For RJ71LP21-25 programs, use the link special relay (SB) and link special register (SW) to configure an interlock according
to the link status of the own station and other stations.
The following shows the link special relay (SB) and link special register (SW) for the interlock used in programs.
• Communication status with CPU module (SB0020)
• Baton pass error status of own station (SB0047)
• Data link error status of own station (SB0049)
• Baton pass status (SB0070)
• Data link error status of each station (SB0074)
• Baton pass status (SW0070 to SW0073)
• Data link status (SW0074 to SW0077)
• Standby system CPU status in redundant system (SW01FC to SW01FF)
For details, refer to the following.
Page 144 List of Link Special Relay (SB) Areas, Page 155 List of Link Special Register (SW) Areas
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3.1 Precautions for Programming
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