Link Special Register (Sw) - Mitsubishi Electric melsec q00ujcpu User Manual

Programmable controller

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9.2.14 Link special register (SW)

(1) Definition

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

modules, such as CC-Link IE controller network modules and MELSECNET/H network modules.

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

monitoring the link special register.

(2) 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.

Section 9.1)

The points for an intelligent function module such as a CC-Link IE controller network module or a MELSECNET/H

network module are 512.

By assigning it as shown in Figure 9.42, data of the link special register (SW) in a CC-Link module can be also

refreshed to the link special register (SW) in the CPU module.

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

Link special register

For 1st network module

For 2nd network module

For 3rd network module

For 4th network module

For 1st CC-Link module

Figure 9.42 Points of the link special register