MITSUBISHI ELECTRIC FX2N - Manual (Page 45)

Diagnostic Message 7
7-1
7. Diagnostic Message
7.1 Diagnostic Massage Frame
When a diagnostic error occurs in the 32DP-IF, a diagnostic message is sent form the 32DP-IF
to the DP-master as shown in Figure 7.1. Refer to section 4.2 for the diagnostic message
description.
Note:
If the DP-master receives a diagnostic message, make provisions for the system to act
safely in accordance with the error message.
Figure 7.1: Diagnostic Massage Frame
*1 This diagnostic message is either number of momentary power failures or the error code
relating to the contents of D8004 (byte No. 3, 4). For error code, refer to section 4.2.4 or
8.3.3.
*2 This diagnostic message is either “0” or the contents of D8068.
7.2 Diagnostic Message Contents List
Byte No. 0 1 2 3
Description
Total length of diag-
nostic massage data
is 9 (09 Hex)
First diagnostic message
Second diagnostic
message
Lower byte of D8029 Higher byte of D8029 Lower byte of D8004
Byte No. 4 5 6 7
Description
Second diagnostic
message
Third diagnostic message
Lower byte of last
diagnostic message
data
*2
Higher byte of D8004
Lower byte of diag-
nostic
*1
Higher byte of error
code
*1
Byte No. 8
Description
Higher byte of last
diagnostic message
data
*2
Table 7.1: Diagnostic Message List
Item Third diagnostic message Last diagnostic message
32DP-IF status is STOP This velure is “0”.
This velure is “0”. Momentary power failure
This velure is number of momentary
power failures in D8007.
Power down
I/O bus error This velure is error code in D8061.
This velure is in D8068. Parameter error This velure is error code in D8064.
Operation error This velure is error code in D8067.
FX2N-32DP-IF Profibus-DP Interface Unit