General Overview:

• Brand & Manufacturer: Yokogawa Electric Corporation
• Location: Japan
• Product Type: Communication Module

ACM11 Specific Specifications:

• Model: ACM11 (RS-232C Communication Module), ACM12 (RS-422 / RS-485 Communication Module)
• Interface:
  • ACM11: RS-232C (1 port)
  • ACM12: RS-422 or RS-485 (1 port)
• Connection Method: Point-to-point (ACM11 & ACM12); Multipoint (ACM12)
• Communication Mode: Half-duplex
• Synchronization: Start-stop synchronization
• Communication Speeds: 1200 / 2400 / 4800 / 9600 / 19200 bps
• Transmission Code: ASCII/binary
• Character Length: 7/8 bit
• Stop Bit Length: 1/2 bit
• Parity Check: None/odd/even (Note: "No parity" cannot be specified at 19200 bps.)
• Reception Delay: 1 ms standard; immediate in special cases
• Transmission Distance:
  • ACM11: Max. 15 m
  • ACM12: Max. 1200 m (Total length)
• Installation: Installed in the Communication Module Nest
• Wiring:
  • ACM11: KB3, AKB141, AKB143 (RS-232C modem), KB4, AKB142, AKB144 (RS-232C null-modem)
  • ACM12: 3 pairs shielded cable or AKB161 (cable to connect with FA500; Max. 100 m)
• Connection Type:
  • ACM11: Dsub 25 pin (female)
  • ACM12: Connected to the terminal (6 poles) with M4 screws
• Current Consumption: 1 A (5.0 V DC)