4. FUNCTIONS
MELSEC-A
4-24
(8)
Slave trouble information cancel area
This stores the value that masks the slave trouble information (error code = 0200h detailed data
2). Even if the slave trouble information corresponding to this area bit occurs the slave trouble
information detection signal (X01) and RSP ERR. LED do not turn on. In addition, the trouble
information is not stored in the trouble information area. The default value is 02B9h.
This 02B9h trouble information also occurs during normal situations and is masked. This value
can only be changed when exchange start is off. (When on, changes are ignored.)
Address
b15
b0
2080/820h
Slave trouble information mask value
Slave trouble information
bit
Description
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Controlled by another master.
The parameter sent by the master is incorrect.
The response from the slave is incorrect.
The function requested by the master is not supported.
Expansion trouble information exists.
The environment data received from the master does not match that of the slave.
The slave is not ready to exchange.
Cannot exchange with slave.
Separated from the cyclic exchange by the parameter.
0 (reserved)
The slave has entered the SYNC mode.
The slave has entered the FREEZE mode.
Watchdog timer monitoring is being conducted in the slave.
0 (fixed)
Diagnostic data read request
Parameter allocation request from the slave
To mask this
trouble information
Buffer memory
address
2080/820h
bit
bit
0
0
0
0
0
0
1
0
1
0
1
1
1
0
0
1
Set to 02B9h.
=
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15