Mounting Instructions

Connect external components
Desk call station extension PTO2001-A1
7
A6V10430579_en--_b
133 | 173
7.2.4 Connect RS232
The PTO2001-A1 has two RS232 connectors. One ('CN4') is used to connect
PT2001-A1, and the other ('CN3') is used to communicate with the next PTO2001-
A1.
RS232 connector 1 - 'CN4'
Pin
Description
Remark
1
RX
Receive RS232 data
2
TX
Send RS232 data
3
GND
GND reference voltage
Table 105: PTO2001-A1 RS232 connector 1 - 'CN4'
RS232 connector 2 - 'CN3'
Pin
Description
Remark
1
GND
GND reference voltage
2
TX
Send RS232 data
3
RX
Receive RS232 data
Table 106: PTO2001-A1 RS232 connector 2 - 'CN3'
To connect RS232 on the first PTO2001-A1, connect the 'RX' on the PT2001-A1 to
'TX' on the PTO2001-A1, 'TX' to 'RX', and 'GND' to 'GND'.
Connect the next PTO2001-A1 RS232 to the previous PTO2001 by 'RX' – 'RX',
'TX' – 'TX', 'GND' - 'GND'.
Fig. 90: PTO2001-A1 connection to PT2001-A1
1
1
CN4
CN1
RS232-1
Power-1
DC 24 V
1
CN3
RS232-2
1
CN2
Power-2
DC 24 V
1
1
CN4
CN1
RS232-1
Power-1
DC 24 V
1
CN3
RS232-2
1
CN2
Power-2
DC 24 V
1
1
1
1
1
1
CN1
CN5
CN2
CN7
CN4
CN3
SD-Slot
Power
DC 24 V
RS232
GND
RX
TX
GND
RX
TX
GND
RX
TX
24 V
0 V
PT2001
PTO2001
PTO2001