Access To Melsecnet/H Module Link Devices - Mitsubishi MELSEC-Q Series User Manual

13
MULTIPLE CPU SYSTEM CONCEPT

13.5 Access to MELSECNET/H Module Link Devices

Access to the MELSECNET/H module link devices by a user program is executable for the
control CPU only.
The MELSECNET/H module controlled by another CPU cannot be accessed by a user
program.
If such access is attempted, a non-controlled module read error (return value: -28633) or
non-controlled module write error (return value: -28654) occurs.
However, via MELSECNET/H, the MELSECNET/H module controlled by another CPU can
be accessed by a user program. ( Section 10.3.12 (3))
CPU 0 1 2
1 2 1 1
Accessible
Inaccessible
Figure 13.24 Access to MELSECNET/H module link devices
13.5 Access to MELSECNET/H Module Link Devices
Network modules
Slot number
3 4
1 2 Control CPU setting
9
10
11
12
13
14
15
16
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