Replacing Modules - Siemens SIMATIC FM 353 Manual

3.3

Replacing modules

Overview
If a defective FM 353 has to be replaced, and no programming device/PC is avail-
able for parameterization, or the module is to be replaced while the system is
switched on, please note the following start-up requirements (CPU, FM):
S An SDB w 1 000 should be generated in order to complete the startup (for stor-
ing the parameter data); see Section 5.5.
S In the user program:
− Interrupt communication with the FM 353 before removing the old FM, and
resume communication after installing the new FM.
− If data/parameters are modified during operation and stored retentively on
the FM, please follow the instructions in Section 9.3.1.
Replacing an FM 353
To replace a parameterized but defective FM 353:
1. Replace the FM 353 when the system is switched off (CPU, FM)
Remove the FM 353 (see Sec. 3.2)
Install the FM 353 (see Sec. 3.1)
Appropriate SDB w 1 000 in
CPU?
1) How to create an SDB w1 000 after startup, and
how to load it in the CPU is described in Section 5.5.
Fig. 3-1
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Switch on the system
1)
Yes
FM 353 parameter-
ized automatically
FM 353 ready
Replacing the FM 353 with the system switched off
Installing and Removing
No
Reparameterization of FM
→ PG/PC required
J
3-5