Connection Diagram - Siemens OCI412.10 Instructions Pour Installation, Utilisation Et Entretien

Connection diagram

LMV2...
LMV3...
X92 COM
X92.4
Ground
X92.2
TxD1
X92.3
RxD1
X92.1
DC +5V
Operating elements
Switch OCI412.10
Switch Alternative
no. designation
1 R1 ¹)
2 R2 ¹)
3 R3 ¹)
4 S1
5 S2
6 S3
7 S4
8 S5
¹) Terminators
Indication of operating
states via LEDs
6332
Functional extra - low-voltage
(FELV)
OCI412.10
X10
X10.1
Ground
X10.2
RxD
X10.3 TxD
X10.4
DC +5V
X10.5
n.c.
Function (switch position ON)
RS-485, bus terminator 120 W (between Data+ and Data-)
RS-485, 820 R-resistor against 5 V (Data+ against 5 V)
RS-485, 820 R-resistor against GND (Data- against GND)
Reserved
Reserved
Reserved
Reserved
Reserved
The terminators can be switched via switches no. 1 through 3 and are of importance
only when the interface is installed at the end of the RS-485 line. The 120 W resistor
(switch no. 1) serves as a bus terminator. In principle, a terminator must be fitted at
both ends of the line. Its resistance must correspond to the characteristic impedance of the line.
The resistance of the OCI412.10 corresponds to that of a typical RS-485 application.
If not sufficient, an additional adequate resistor must be fitted. The characteristic impedance
depends on the type of cable. In bus mode, terminators must not be connected to RS-485
modules located somewhere else on the line. The pull up and pull down resistors (switches
no. 2 and 3) of 820 W each generate a defined level, when all users on the line are switched to
reception (high-impedance).
LED color
Red, flashing fast
Orange, steady
Green, steady
Green, flashing
Protective extra - low-voltage
(PELV)
X20
X20.1
GND
X20.2
Data-
X20.3
Data+
X20.4
GND
+Vs X20.5
RS-485
Description
Internal error OCI412.10
Standby (X10.4, without voltage)
Standby (LMV2... / LMV3..., connected and ready to operate)
Communication Modbus
4
GND
Data-
Data+
Power supplier
PELV
GND
+Vs (AC 24 V +10 %
DC 24 V +20 %)
7615d03e/0107
As supplied
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF