Table 8-1 Recommended Commissioning Procedure: Hardware - Siemens Simatic S7-300 CPU 31xC Series Installation And Operating Instructions Manual

Commissioning
8.2 Commissioning procedure
Recommended procedure: Hardware
With its modular structure and many different expansion options, the S7-300 can be very
large and extremely complex. It is therefore inappropriate to initially start up an S7-300 with
multiple racks and all inserted (installed) modules. Rather, we recommend a step-by-step
commissioning procedure.
We recommend the following initial commissioning procedure for an S7-300:
Table 8-1 Recommended commissioning procedure: Hardware
Tasks
An installation and wiring
check according to checklist
Disconnecting drive
aggregates and control
elements
Preparing the CPU
Central unit (CU):
commission the CPU and
power supply, check the
LEDs
Reset CPU memory and
check the LEDs
CU:
commission the remaining
modules
Expansion module (EM):
Connecting
EM:
Commissioning
Danger
Proceed step-by-step. Do not go to the next step unless you have completed the previous
one without error / error message.
Reference
Important notes can also be found in the section
Troubleshooting.
8-2
Comments
-
This prevents negative effects on your system as a result
of program errors.
Tip: By redirecting data from your outputs to a data block,
you can always check the status at the outputs
Connecting the PG
Commission the CU with inserted power supply module
and CPU.
First, switch on the expansion devices (EMs) which are
equipped with their own power supply module, and then
switch on the power supply module of the CU.
Check the LED displays on both modules.
-
Insert further modules into the CU and commission these,
working successively.
Interconnect the CU with EMs as required: Insert only one
send IM into the CU, and insert the matching receive IM
into into the EM.
Insert further modules into the EMs and commission
these, working in successively.
Information can be found
In the following chapter
-
Connecting the programming
device (PG)
Initial power on
Debugging functions,
diagnostics and
troubleshooting
CPU memory reset by means
of the mode selector switch
Module Data
Manual
Installing
See above.
Debugging Functions, Diagnostics and
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
Reference