YOKOGAWA CENTUM CS 3000 - Page 160

3. Cabling
3-82
TI 33Q01J10-01E
RS-232C Communication Card ACM21
F030723.ai
AMN51
Figure ACM21 Signal Cable Connection
Use modem cable KB3 and null modem cable KB4 with a D-Sub 25-pin connector.
Table RS-232C Interface Connector Pin Positions
Pin Assign Signal Abbreviation Signal Name Description
1 FG Frame Ground Maintenance grounding
2 SD Send Data (output) Transmission data (output)
3 RD Receive Data Receiving data (input)
4 RS Request to Send (output) Transmission request (output)
5 CS Clear to Send Ready for transmission (input)
6 DR Dataset Ready (input) Dataset ready (input)
7 SG Signal Ground Signal common return
8 CD Carrier Detect (input) Carrier detection (input)
20 ER Equipment Ready (output) Data terminal ready (output)
May 18, 2007-00