Siemens SIMATIC Rack PC 840 Manual page 45

Rack PC to PG Connection (V.24, TTY)
If you want to connect your Rack PC to a programming device, you can plug the
appropriate connecting cable into the V.24 or TTY interface port
Tabelle 3-2
Port
COM 1 as a
V.24 port
COM 1 as a
TTY port
Notice
1. When connecting the programming devices in series, make sure you connect
the cable the right way around (see Figure 3-10).
2. The connecting cable can only be ordered as a spare part. The connecting
cable is described in Chapter 7.
3. The line current (TTY) is an optional product feature.
Rack PC 840
Figure 3-10 Direction of Connection: Adapter – Connecting Cable
Notice
For the PC/PG connection, you must switch the TTY ports (COM 1) in the
programmable logic controller to passive by changing the jumper setting. The
Rack PC interface is always active!
SIMATIC Rack PC 840 Manual
A5E00104826-03
Setting Up and Operating the SIMATIC Rack PC 840
Connection of the Rack PC to other PUs
Link
with PG 7xx
with PG 6xx
Adapter
Active
6ES5 731–6AG00
Connecting Cable
Order No.:
2)
6ES5 733-5BD20
Series connection of
2)
6ES5 733 -2xxx0
and
1)
6ES5 731-6AG00
Connecting cable
Passive
PG 6XX
6ES5 733–2xxx0
Adapter
6ES5 731-6AG00
3-15