Siemens PC 670 - Manual (Page 55)

Connecting and Switching on the Computing Unit Release 04/02
3-21 Panel PC 670 Computing Unit, Equipment Manual
Connecting the computing unit to programming units (TTY)
In order to connect the computing unit, connect the corresponding connection
cable to the TTY interface.
Table 3-2 Connecting the computing unit to other programming units
Interface Connection Connecting cable
Order No.
Adapter
COM 1 as TTY
port with PG 6xx Series connection of
6ES5 733 -2xxx0
2)
and
6ES5 731-6AG00
1)
6ES5 731-6AG00
Notice
1. When connected in series, it is essential to connect the cable in the right direction (refer
to Figure 3-10).
2. The connecting cable is available for order only as a spare part. A description of the
connecting cables is provided in Chapter 7.
Adapter Connecting cable
Active Passive
6ES5 731-6AG00 6ES5 733-2xxx0
PG 7xx PG 6XX
Figure 3-10 Direction of Connection: Adapter - Connecting Cable
Notice
When connecting the computing unit to another programming unit, switch the TTY
ports (COM 1) in one of the programming units by changing the jumper setting.
When the computing unit is delivered to you, this port is always set to active.