Table of Contents
Advertisement
Programming the FM 453
Table 6-4
12-byte
Hints to the User
In a diagnostic event, bytes 0 to 3 are automatically transmitted to the CPU,
and the diagnostic organization block (OB82) is called up. The diagnostic OB
should be included in the user program; otherwise the CPU will go to the
Stop state. Byte 0 contains group error messages that are set simultaneously
with the corresponding messages in bytes 2, 3 and 8.
The operating error (byte 8.7) is specified again. The error numbers are avail-
able for display purposes in the diagnostic buffer of the FM 453 and in the
data block for status messages (DB-SS) (see Section ). For special error eval-
uations in the user program, these error numbers are available in DS164.
6-20
Diagnostic Information, continued
Data
Byte.Bit
Format
No.
4
FM Pos identifier (74H)
5
Length of diagnostic information (16)
6
No. of channels (3)
7.0...2
Channel error vector (1...3)
8.0
Cable break (incremental encoder) for channel 1
8.1
Absolute encoder error for 1
8.2
Error pulse incr. or zero ref. mark missing for channel 1
8.3
Voltage monitoring encoder for channel 1
8.4
Voltage monitoring
8.5
Voltage monitoring of digital outputs for channel 1
8.7
Operating error (see Chapter 11, Troubleshooting) for channel
1
9
Free
10
Analog byte 8 for channel 2
11
Free
12
Analog byte 8 for channel 3
13 – 15
Free
Significance
15 V for channel 1
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Advertisement
Table of Contents
