Lenze I/O system 1000 System Manual - Manual (Page 221)

Product description
I/O compound modules − communication
RS232 interface − EPM−S640
3
l
221 EDSIO1000 EN 7.0
Terminals
Module terminals, spring terminals 1
View Designation Explanation Terminal data
2 6
3 7
4 8
1 5 1 5
4 8
1
TxD output (transmit data);
transmitted data
10 mm
0.08 ... 1.5 mm²
(AWG 28 ... 16)
2
RTS output (request to send)
RTS = "1": module ready to
transmit
RTS = "0": module is not
transmitting
3
DCD input (Data Carrier Detect);
data can be received
4
DSR input (Data Set Ready);
modem signalises ready for
operation
5
RxD input (receive data); received
data
6
CTS input (clear to send); module
is allowed to send data
7
GND_ISO (Signal Ground); zero
reference point signal (isolated)
SLIO002
8
DTR output (Data Terminal
Ready); module ready for
operation
)
Note!
RI (Ring indicator) − modem ring is not used!
Wiring
TxD TxD
RxD RxD
CTS CTS
RTS RTS
GND_ISO GND
DCD DCD
shield shield
DSR DSR
DTR DTR
SLIO640a
Fig. 3−76 Without hardware handshake
TxD TxD
RxD RxD
CTS CTS
RTS RTS
GND_ISO GND
DCD DCD
shield shield
DSR DSR
DTR DTR
SLIO640b
Fig. 3−77 With hardware handshake