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Control Functions Of Remote I/o Modules And Remote Terminal Modules - Mitsubishi Electric MELSEC-A Series User Manual

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4.A2CCPU
- - - - - - - - - - - - - - - - - - - - MELSEC-A
I
4.2.9
Control functions of remote I/O modules and remote terminal modules
The following functions and settings are provided for the A2C to control
remote I/O modules and remote terminal modules.
To use only remote I/O modules, set the total number of stations and the
mode.
When remote terminal modules are used in combination with remote I/O
modules, execute setting for remote terminal modules in addition to the total
number of stations and the mode.
For these settings, use either of the following methods:
(a) Set with special registers (D9021 to 09036, 09173) by a sequence
program when system FO prior to SW3GP-GPAA is used.
(b) Use parameter remote terminal setting when SW4GP-GPPA system
FO is used.
Setting Item
Defaull
5e"lng Range
Special Register Number
Total number of stations
64
1 1064
09036
0:
Automatic online return
provided
Mode
Automatic online
return
1 :
Automatic online return
09173
provided
not provided
2:
Transmission stop at an
occurrence of online error
Station
None
1 to 61
09021 to 09034
number
Remote
terminal
0:
Mitsubishi standard
setting
Protocol
Mitsubishi standard
protocol
09035
protocol (MINI protocol)
1 :
No-protocol
POINT
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If anyone of the settings is outside the allowable setting range, it causes
the MINI-S3 line error and following processing occurs:
All the settings are reset to defaults to execute the control.
The M9061 (communication error flag) is set and "1· is stored in
09061 (communication error cause storing register).
I
Setting for Remote Terminals Using Parameters
I
When using the SW4GP-GPPA system floppy disk, use a parameter to
perform remote terminal setting.
For the procedure of initial setting of the A2C using parameters provided by
the GPP/PHP, refer to the A6GPP/A6PHP(SW4GP-GPPA) Operating Manual.
4-37

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