Mitsubishi MELSEC-A A1SD71-S2 User Manual page 61

3.
SPECIFICATIONS
MELSECd
(6) Error code area (X axis :address 45, Y axis :address 345)
The code number of any error detected by the A1 SD71 is written to these
addresses by the
OS.
Use in conjunction with the error detection signal
(X1
8 ) .
POfNTS
I
0
The error code area is used by the AlSD71
OS
and data must not
0
The most recent error code is written to this area. The absence of
any error is indicated by a "0" in this address.
It
takes 20 to 30 msec to set an error code after outputting an error
detection signal (X1
B).
be written here.
For error codes, refer to Chapter 8 .
7) M code area (X axis :address 46, Y axis :address 346)
The "M code" specified in the positioning data for the current positioning
operation is written to these addresses. The M code number can be used
to co-ordinate external equipment and processes.
I
b15 b7 bO
I E
Lower 1 byte
=
M code
Set to 0.
f
M code specified
=
1 to 255
M code not specified =
0
Fig.
3.32
M Code
Area
Do not write data to these addresses.
For
M
code data timing details, refer to Section 3.4.1 ( 1 6)
3 - 5 0