Siemens SIMATIC PC 670 Equipment Manual page 53

Release 04/02
Connecting the computing unit to an S5 PLC
You can connect the computing unit to a SIMATIC S5 programmable controller
using the COM 1/TTY interface.
Figure 3-9
To connect the computing unit to a SIMATIC S5 programmable controller, perform
the following steps:
1. Disconnect the computing unit from the mains power supply.
2. Plug the connecting cable onto the COM 1 port.
3. Screw the connector tight.
4. Plug the connecting cable into the corresponding port on the CPU of the
programmable controller.
5. In order to enable TTY operation, you must set TTY to "enabled" in the BIOS
setup. Access the BIOS Setup by pressing the F2 key during the boot routine.
Caution
!
Danger of damage being caused to the device
If you interchange the connectors, or use wrong connecting cables, the port might
be damaged.
Be careful not to plug the TTY cable in the LPT 1 port of the computing unit
instead of the COM1/TTY port.
Before inserting the connecting cables, the static charge of your body, the device
and the connecting cables must be brought to the same potential. To do this, touch
the metal housing briefly.
Use only the original connecting cable for the connection to the programmable
controller.
Panel PC 670 Computing Unit, Equipment Manual
Connecting and Switching on the Computing Unit
COM 1
(Socket)
Connection to an S5 Programmable Controller
3-19