Commissioning
6-6
Automation System S7-400 Hardware and Installation
A5E00850741-01
Communication between Programming Device and CPU
The following conditions apply when communicating between a programming
device and a CPU:
• You need a programming device with STEP 7.
• The CPU can communicate with the programming device in the following
modes: RUN, STOP, STARTUP, and HOLD.
Operator Control
A description of operator control of communication between CPUs and
programming devices can be found in the STEP 7 manuals.
6.4 Switching On an S7-400 for the First Time
Switching On an S7-400 for the First Time
First switch on the power cutout.
Then set the standby switch of the power supply module from the standby setting
to the I setting (output voltages at rated value).
Result:
• On the power supply module, the green 5 VDC and 24 VDC LEDs light up.
• On the CPU
-- The yellow CRST LED lights up;
-- The yellow STOP LED flashes for three seconds at 2 Hz. During this time the
CPU automatically executes a reset.
-- The yellow STOP L ED lights up after the automatic reset.
If the red BAF LED and one of the y ellow LEDs (BATTF or BATT1F or BATT2F)
light up on the power supply module, check the backup battery/batteries, the
setting of the BATT INDIC switch, or read the section on controls and indicators of
the power supply modules in Chapter 3 of the Reference Manual, Module
Specifications.
Switching On an H System for the First Time
First switch on the master device and then the standby device. In each case,
proceed as described above.
To Next Page
Loading...
