Siemens installation manual Connecting a Programming Device PG to an S7-400, If You Then

Commissioning

According to the backup concept, Table 6-2 shows how you must set the battery monitoring switch on the different power supply modules.

Table 6-2 Setting the Battery Monitoring Switch

If You ...	...Then
do not use battery monitoring,	set the BATT INDIC switch to OFF.
use battery monitoring with a single-width	set the BATT INDIC switch to BATT.
power supply module,
want to monitor a backup battery with a	set the BATT INDIC switch to 1BATT.
double or triple-width power supply module,
want to monitor two backup batteries with a	set the BATT INDIC switch to 2BATT.
double or triple-width power supply module,

6.3Connecting a Programming Device (PG) to an S7-400

Connecting a Programming Device (PG) to an S7-400

You must connect the programming device via a connecting cable to the MPI of the CPU. This allows access via the communication bus to all CPUs and programmable modules.

S7-400

PG cable

Programming device

Figure 6-1 Connecting PG to an S7-400

Automation System S7-400	Hardware and Installation	6-5
A5E00850741-01