Omron C200HW-PRM21, Operation Manuals

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Physical layout of the unit
Section 2-1
11
Any unit number in the setting range is allowed as long as it has not been set
on another Special I/O Unit connected to the PLC. If the same unit number is
used for the C200HW-PRM21 and another Special I/O Unit, an I/O Unit Over
error will occur in the PLC and it will not be possible to start up the
PROFIBUS-DP Network.
Note Always turn OFF the power to the PLC before changing the unit number
setting. The Unit only reads the unit number setting during the initialisation
after power-up, so not after a software reset.
Use a small flat-blade screwdriver to turn the rotary switch; be careful not to
damage the switch.
2-1-3 BUS Connector
The fieldbus connector is a 9-pin female sub-D connector, as recommended
by the PROFIBUS standard EN 50170.
The signals DGND and VP are used internally to power the bus terminator
(see section 2-1-5).
The signal RTS (TTL signal) is meant for the direction control of repeaters if
repeaters without self control capability are used.
The PROFIBUS standard defines 24 V remote powering signals for pin 2 and
pin 7. These signals are optional and have not been implemented in this Unit.
CPU Unit models Unit number
setting range
Setting
method
C200HS, C200HE,
C200HG-CPU3[ ]-E/CPU4[ ]-E,
C200HX-CPU3[ ]-E/CPU4[ ]-E
0 to 9 Single-digit
hexadecimal
C200HG-CPU5[ ]-E/CPU6[ ]-E,
C200HX-CPU5[ ] -E/CPU6[ ]-E
Cs1-series
0 to F
Pin No. Signal Description
1 Shield Shield / protective ground
2 - -
3 B-line Data signal
4 RTS Control signal for repeaters (direction control) (TTL)
5 DGND Data ground
6 VP Supply voltage of the terminator resistance (5V)
7 - -
8 A-line Data signal
9 - -