Siemens SIMATIC FM 453 Manual page 321

11.2.2 Diagnostic Interrupts
Overview
Internal errors, external errors and external channel errors are indicated to an
interrupt-capable system by means of diagnostic interrupts (see diagnostic
interrupt data in Table 11-4, ). This presupposes that the diagnostic interrupt
message was activated at the time of configuration (see Chapter 5.2). If the
system is not interrupt-capable, the diagnostic interrupt information must be
read out cyclically with FC 6.
The diagnostic interrupts are identified by setting the corresponding byte bit
number in the data set (see diagnostic interrupt data, Section 6.4) and com-
prise the signals for all three channels.
Internal errors
External errors
External channel errors
The operator control errors in the "external channel error" class are specified
again, and are stored in data set 164/199/234 or in the diagnostic buffer.
The FM 453 signals a diagnostic interrupt "incoming" or "outgoing."
Message to the CPU (precondition: interrupt message activated
(see Section 5.2)
No OB 82 exists OB 82
CPU CPU
Enters the diag-
switches to
nostic informa-
STOP
tion in the diag-
nostic buffer of
the CPU (4 by-
tes) and calls
SFC 52 SFC 52
Alarm If processing is to continue after a diagnostic interrupt, then Restart after the
Acknowledgement error has been remedied in the appropriate channel (see write job no. 11 Sec-
tions 6.2.1 and 9.3.3).
Internal errors cannot be acknowledged. External errors are self-acknowledg-
ing.
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Error Class
Byte.bit no. 0.1
Group error byte 2, 3
Byte.bit no. 0.2
Byte.bit no. 0.2, 0.3
Group error byte 8
Diagnostic Interrupt
OB 1
Enters the diag- Calls FC 6
nostic informa-
tion in the user
DB starting at
address 72 and
calls FC 4
On operator control error:
(addr. in user DB 80.7/82.7/84.7)
for further error specification read
DS 164/199/234 in OB 1
Troubleshooting
Coding Message
"INF" LED
"EXTF" and "STAT" LED
"EXTF" and "STAT" LED
Message in the "trou- Entry in diag-
bleshooting" display nostic buffer
of "Parameterize FM f "P t i FM
453" 453
Menu: Test
Alarms
11-5