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Appendix 2
The following explains the details of items shown in "Buffer Memory List" (refer to
(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.
Address
Hex.
0
H
1
H
2
H
3
H
4
H
5
H
6
H
7
H
8
H
10
to 13
H
H
14
to 17
H
H
18
to 1F
H
H
Buffer Memory Details
Item
Dec.
(Use
0
prohibited)
Number of
1
connected
modules
Number of
2
retries
Number of
3
automatic
return modules
Standby master
4
station
specification
(Use
5
prohibited)
Operation
specification
6
when CPU is
down
Scan mode
7
specification
Delay time
8
setting
Reserved
16 to 19
station
specification
Error invalid
20 to 23
station
specification
(Use
24 to 31
prohibited)
Description
Stores the total number of the device 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 device 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)
Stores the data link status when a master station programmable
controller CPU error occurs.
Default value: 0 (Stop)
Storage area: 0 (Stop), 1 (Continue)
Stores either the synchronous or asynchronous mode for sequence
scan.
Default value: 0 (Asynchronous)
Storage area: 0 (Asynchronous), 1 (Synchronous)
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.
APPENDICES
Page 47, Section 3.6).
389
A
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