Startup Response; Dp Master And Dp Slave Failure; Module Error - Siemens SIMOCODE DP Programming And Operating Manual

SIMODIAG Function
3.1 Description
3.1.5

Startup response

In OB100, the identifier for "Startup" is entered in output OMODE (OMODE = 16#xx00xxxx). In
OB1, the identifier for "First Run" is entered in output OMODE (OMODE = 16#xx01xxxx). The alarm
messages are suppressed in the OB100 for the RUNUPCYC no. of times
3.1.6

DP master and DP Slave failure

A failure in the DP Master or DP Slave is detected by OB86 interrupt and indicated by the
OB_DIAG1 block connected in series. Inputs RACKF, SUBN1ERR and SUBN2ERR are evaluated in
the SIMODIAG. In the event of a fault, the "higher-level error" (OMODE=16#40xxxxxx) or
"redundancy error" (OMODE=16#20xxxxxx) identifier is written to output OMODE.
3.1.7

Module Error

Module Error
After a warm restart (OB100) or failure in the DP Master or DP Slave or if ACC_ID = TRUE,
the module addressed by LADDR is checked. This is done by reading the Read System Status
(RDSYSST SFC51). If the module addressed by LADDR is not configured properly, output
QMODF is set and the "higher-level error" identifier (OMODE=16#40xxxxxx) is written to output
OMODE.
When ACC_ID is made True and the module addressed with LADDR is missing:
• the "SIMOCODE-DP Module Failure" message is generated
• the RDSYSST SFC51 call status is passed to output parameter RDSTATUS.
The module fault (QMODF) is reported when OB83 is triggered and is detected by the event
number 16#61 and event class 16#39.
When ACC_ID is set to true and temporary error exists, the call will be repeated for 300
cycles, beyond which the error persists. The RDSYSST call was terminated dynamically..
Input parameter "RST_ERR" is used to exclusively reset or disable the RDSYSST call.
1. RST_ERR = 0, Disable call
2. RST_ERR = 1, Exclusive reset
3. RST_ERR = 15(Default), Enable Call
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SIMOCODE DP PCS 7 Library Migration (Legacy) - V9.1 SP2
Programming and Operating Manual, 11/2022, A5E51265657002A/RS-AC/003