Siemens SIMATIC Box PC 840 Manual page 50

Setting Up and Operating the SIMATIC Box PC 840
Caution
!
Risk of damage to the SIMATIC Box PC 840!
The interface port may be damaged if you confuse the connections or use the
wrong connecting cables.
Make sure the TTY cable of the SIMATIC Box PC 840 is plugged into the
COM 1 / TTY port and not into the LPT 1 port.
Before inserting the connecting cables, the electrostatic charge in your body, the
device and the connecting cables must be brought to the same potential. Briefly
touch the sheet metal case to do this.
Use only original cables to establish the connection to the programmable
controller.
Connecting the SIMATIC Box PC 840 via an Adapter
The 6ES5 734-2BD20 standatd connecting cable is required for connection to a
programmable controller. An adapter is available for connecting the
programmable controller using old standard cables.
Tabelle 3-1
Port
TTY port
(COM 1) (COM 1)
In order to maintain a data transfer rate of 9600 bps up to a distance of 1000 m
(3300 ft), the receiving diode is connected to ground (reference) via the connecting
cable.
Notice
You can obtain lengths differing from the standard connecting cable
(6ES5 734-2BD20) under the order number 6ES5 734-2xxx0, whereby xxx stands
for the length code.
3-18
Adapter for SIMATIC Box PC 840 Connection
Link
SIMATIC Box PC 840 to SIMATIC-
S5 programmable controller S5 programmable controller
Connecting Adapter
Cable
Order No:
6ES5 734-2BD20
6ES5 731-1xxx0 6ES5 731-6AG00
15-pin
6ES5 731-0xxx0 6ES5 731-6AG00
25-pin
SIMATIC Box PC 840 Manual
A5E00085984-04