Appendix 2 Buffer Memory Details - Mitsubishi LJ61BT11 User Manual

Appendix 2 Buffer Memory Details

Address
Hex. Dec.
0 0
H
Number of connected
1 1
H
modules
2 2 Number of retries
H
Number of automatic
3 3
H
return modules
Standby master station
4 4
H
specification
5 5
H
Operation specification
6 6
H
when CPU is down
Scan mode
7 7
H
specification
8 8 Delay time setting
H
Reserved station
10 to 13 16 to 19
H H
specification
Error invalid station
14 to 17 20 to 23
H H
specification
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The following explains the details of items shown in "Buffer Memory List" (refer to
Section 3.6).
(1) Parameter information area
Stores the parameter settings.
Do not perform write to the parameter information area. Doing so may cause an
error.
The following table lists the parameter information areas.
Item
(Use prohibited)
Stores the total number of the slave stations that are connected to the master station
(including reserved stations).
Default value: 64 (modules)
Storage area: 1 to 64 (modules)
Stores the number of retries when a communication error occurs.
Default value: 3 (times)
Storage area: 1 to 7 (times)
Stores the total number of the slave stations that can be returned to system operation by
a single link scan.
Default value: 1 (module)
Storage area: 1 to 10 (modules)
Stores the station number of the standby master station.
Default value: 0 (no standby master station specified)
Storage area: 0 to 64 (0: No standby master station specified)
(Use prohibited)
Stores the data link status when a master station programmable controller CPU error
occurs.
Default value: 0 (Stop)
Storage area: 0 (Stop)
Stores either the synchronous or asynchronous mode for sequence scan.
Default value: 0 (Asynchronous)
Storage area: 0 (Asynchronous)
Set 0 for the delay time.
Stores the reserved station.
Default value: 0 (Not specified)
Storage area: Bit corresponding to the station number turns on.
Stores the error invalid station.
Default value: 0 (Not specified)
Storage area: Bit corresponding to the station number turns on.
Description
: 1 (Continue)
: 1 (Synchronous)
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APPENDIXES
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