Link Special Register (Sw) - Mitsubishi Electric Q01UCPU User Manual

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Link special register (SW)

The link special register (SW) is used to store communication status data and error data of intelligent function modules,

such as CC-Link IE module and MELSECNET/H module.

Because the data link information is stored as numeric data, error locations and causes can be checked by monitoring

the link special register.

(1) Number of link special register points

The points for the link special register in the CPU module are 2048 (SW0 to SW7FF). However, the number of

points can be changed in the Device tab of the PLC parameter dialog box. (

link special register points for intelligent function modules (such as CC-Link IE modules and MELSECNET/H

modules) are 512. Assign the link special register points as shown below. This enables data in the link special

For details of the link special register, refer to the manual for each intelligent function module that has the link

special register.

Link special register

For 1st network module

For 2nd network module

For 3rd network module

For 4th network module

For 1st CC-Link module

Page 444, Appendix 1.2.8) The

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