Siemens Simatic S7-1500R - Page 272

Preparing the SYNCUP system state
After SYNCUP starts, the CPUs prepare SYNCUP:
•
The backup CPU switches to SYNCUP operating state and sends a status message to the
primary CPU.
•
The primary CPU then switches from the RUN operating state to RUN-Syncup.
The current operating states are shown on the displays:
Table 11-5Preparing SYNCUP
Primary CPU Backup CPU
6ES7 517-3HP00-0AB0
CPU 1517H-3 PN
X1: 192.168.0.1
X2: 192.168.1.1
[Primary] V3.0
RUN-Syncup
Overview
OK
6ES7 517-3HP00-0AB0
CPU 1517H-3 PN
X1: 192.168.0.1
X2: 192.168.1.1
[Backup] V3.0
SYNCUP
Overview
OK
Sequence of the SYNCUP system state
The operating systems of the two CPUs run through SYNCUP in five phases:
•
Copying the SIMATIC memory card ①
•
Restart of the backup CPU ②
•
Finishing tasks ③
•
Copying the work memory ④
•
Making up backup CPU lag ⑤
The display of the primary CPU shows you the current phase of the SYNCUP system state.
The display of the backup CPU shows "Connect..." state during the phases ② to ⑤ until the
RUN-Redundant system state is reached.
272
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Commissioning
11.4 Operating and system states