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2744458

P1-P3P4-P6P7-P9P10-P12P13-P13
PSM-ME-RS232/TTY-P
100275_en_02 PHOENIX CONTACT 10 / 13
8.1 Configuration
You must open the housing to access the slide switch and
jumper.
• Disengage the housing cover with a screwdriver (A).
• Carefully pull the PCB out of the housing as far as
possible.
Figure 6 Opening the housing
Figure 7 Remove the PCB
8.2 DTE/DCE adjustment
The TxD and RxD can be crossed internally via the S1
DTE/DCE slide switch so that you are able to conveniently
adapt to DTE or DCE interfaces.
• When connecting a DTE device (Data Terminal
Equipment), slide the S1 switch to the DTE position.
• When connecting a DCE device (Data Communication
Equipment) slide the S1 switch to the DCE position.
NOTE: electrostatic discharge!
The device contains components that can be
damaged or destroyed by electrostatic
discharge. When handling the device,
observe the necessary safety precautions
against electrostatic discharge (ESD)
according to EN 61340-5-1 and
IEC 61340-5-1.
DTE
DTEDTE
DCEDCE
S1S1
If the connected interface type is not known,
you can determine the right configuration by
testing the S1 DTE /DCE-slide switch.
PSM-ME-RS232/TTY-P
100275_en_02 PHOENIX CONTACT 11 / 13
9TTY interface
9.1 Operating modes
You can connect a fully active interface to a passive
interface or you can connect two semi-active interfaces.
Figure 8 An active and a passive device
Figure 9 Two semi-active devices
Figure 10 External cable bridges (fully active)
• Use external cable jumpers to set the desired operating
mode active, passive, or semi-active.
The jumpers are included with the goods.
We recommend shielded twisted pair cables (2 x 2 cores
twisted) as connecting cable.
Assignment COMBICON plug-in screw
terminal block
Current source 1 negative GND Pin 6
positive S1+ Pin 2
Current source 2 negative GND Pin 6
positive S2+ Pin 4
Transmit data negative T- Pin 5
positive T+ Pin 1
Receive data negative R- Pin 7
positive R+ Pin3
Ground/shield connection Pin 8
T-
T+
3
7
5
1
S1+
T+
T-
GND
R-
R+
S2+
R+
R-
2
1
5
6
7
3
4
PSM-ME-...TTY
active
PSM-ME-...TTY
passive
T-
T+
S1+
S1+
T+
T-
GND
R-
R+
R+
R-
GND
2
1
5
6
7
3
3
7
6
5
1
2
PSM-ME-...TTY
semi-active
PSM-ME-...TTY
semi-active
PSM-ME-RS232/TTY-P
100275_en_02 PHOENIX CONTACT 12 / 13
9.2 Inversion of signal layer
The logical signal layer is configured for normal operations
as delivered.
Logical 1 = TTY current flow 20 mA
If necessary, you can invert the signal layer by locating the
jumper beneath the slide switch.
Figure 11 Inversion of signal layer
9.3 Connecting the data cables
• For the shield connection, use the provided shield
connection clip.
Figure 12 Install shield clip
DTE
Jumper
NOTE: Interference
Use shielded twisted pair data cables.
Connect the cable shielding at both ends of
the transmission path.
P1-P3P4-P6P7-P9P10-P12P13-P13

2744458

Mfr. #:
Buy 2744458
Manufacturer:
Phoenix Contact
Description:
Terminal Block Interface Modules PSM-ME-RS 232/TTY-P
Lifecycle:
New from this manufacturer.
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