$200.00 (USA and Canada only)
AC7A and AC7B
Power Requirements AC7A AC7B
115 VAC ± 10 VAC @ 50-60 Hz 220 VAC ± 20 VAC @ 50-60 Hz
Power Consumption
0.1 amps @ 115 VAC 5 watts (dissipation)
Operating Temperature Range
0 °C to 70 °C 0 to 95% Humidity (non-condensing)
Optical Isolation
4,000 V between RS-232 and RS-422/485
RS-232 Interface
25-pin, DB-25 female connector
RS-422/485 Interface
Screw terminals or 9-pin, DB-9 female connector
Baud Rate
Up to 38,400 baud; 115.2KBd in Rev. L (AC7A) and later and in Rev. C (AC7B) and later.
RS-232 Distance
Up to 50 feet
RS-422/485 Distance
Up to 5,000 feet at 38,400 baud (3,000 feet at 115,200 baud)
Communications
RS-422/485 full duplex over two twisted pairs and a ground. Additional twisted pairs for RTS and CTS. Also supports RS-485 2-wire mode. This requires user to build a custom RS-232 cable.
Indicators
Transmit, receive, RTS, CTS, and power
This document shows examples of system architecture for PC-based I/O control systems and lists Opto 22 products that work together for PC-based control. System examples include:
The AC7A/B is a stand-alone adapter card that converts RS-232 serial communication to RS-422/485 serial communication, which is directly compatible with the Optomux family of intelligent brain boards.
This document gives instructions for installing the AC7A/B adapter card in an Optomux network in 4-wire RS-422/485 mode with a PC and how to communicate with equipment other Optomux.