Siemens LMV5 Series Technical Instructions page 285

LMV Series
RS-232 – RS-485 Converter
This converter converts a V.24 / RS-232 port into an RS-485 port.
Technical Requirements
Code transparency, that is, data must remain unchanged
•
When using the RS-485 interface as a bus, control of the transmitting section on the RS-485 side
•
must be ensured by the transmitter power of the AZL...
The interfaces must be galvanically separated to improve EMC
•
Available Converter (SCC Part Number K3SC-10-AC100-240)
RS-232 to Converter Wiring
(RJ45 Connection)
Terminal Number
1
3
4
Converter to RS-485 Wiring
RS-232 – RS-485 Converter
(K3SC-10-AC100-240)
Terminal Number
12
9
7
Dip switch settings
The following dip switch settings are necessary to program the RS-232 to RS-485 converter for a 19,200
Baud rate, 8 data bits, 1 stop bit, no parity, and no echoback.
1: ON
2: OFF
3: ON
4: ON
5: ON
6: OFF
7: ON
8: OFF
9: OFF
10: OFF
SCC Inc.
AZL COM2
Description
TxD
RxD
GND
Description
SDB(+)
SDA(-)
SG
Page 15
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RS-232 – RS-485 Converter
(K3SC-10-AC100-240)
Terminal Number Description
5
6
3
RS-485 Field Connection
Description
RS-485(+)
RS-485(-)
Signal ground
Technical Instructions
Document No. LV5-1000
SD
RD
SG
Section 8