Communication Card ACM21 Yokogawa
The specifications of I/O Modules and I/O Module Nests (for RIO) for CENTUM CS 3000 and CENTUM CS 1000 systems.
l Communication Card Communication Card ACM21 Yokogawa
With user programs, subsystems such as PLCs are connected to the Field Control Station via serial communications.
Item
Specifications
Model
ACM21
ACM22
Interface
RS-232C (1 port)
RS-422 or RS-485 (1 port)
How connected
Point-to-point
Point-to-point, Multipoint
How communicates
Half-duplex
How synchronizes
Start-stop synchronization
Communication speed
1200/2400/4800/9600/19200/38400 bps
Transmission code
ASCII/binary
Character length
7/8 bit
Stop bit length
1/2 bit
Parity check
None/odd/even
When a signal is received after data transmission
1 ms (usually)
1 ms
Transmission distance
Max. 15 m
Max. 1200 m (Total length)
How installed
Installed in the Communication Card Nest (Can be combined with ACM71)
Wiring
KB3, AKB141, AKB143 (RS-232C modem) KB4, AKB142, AKB144 (RS-232C null-modem) cable
3 pairs shielded cable
AKB161 (Cable to connect ACM12 and FA500; Max. 100 m)
D-sub 25 pin (female)
Connected to the terminal (6 poles) with M4 screws.
Current consumption
1 A (5.0 V DC)
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