Recommended Commissioning Procedure - Part I: Hardware - Siemens CPU 313C Hardware And Installation Manual

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With its modular structure and many different upgrade 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 9-1

Recommended commissioning procedure - part I: Hardware

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an installation and wiring
check according to
checklist
Disabling connections to
drive aggregates and
control elements
Preparing the CPU
Central unit (CU):
commission the CPU
and power supply, check
the LEDs
Initialize the CPU and
check the LEDs
CU:
commission all other
modules
Expansion module (EM):
Connecting
EM:
Commissioning
9-2
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This prevents negative effects on your system as
a result of program errors.
7LS Redirecting output data from your outputs to
a data block, allows you to check the status of the
outputs at any time
Connecting the PG
Commission the CU with inserted power supply
module and CPU.
First, switch on the expansion modules (EMs)
which are equipped with an auxiliary power
supply module and then switch on the power
supply module of the CD.
Check the LED displays on both modules.
-
Insert further modules into the CU and
commission them in succession.
If required, interconnect the CU and the EMs:
Insert only one Send IM into the CU and the
matching receiver IM into the EM.
Insert further modules into the EMs and
commission them in succession.
S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
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