AC7 OPTO 22, AC7 Datasheet - Page 15

• Manufacturer Part Number: AC7
• Description: Computers, Interface Cards
• Manufacturer: OPTO 22

Specifications of AC7

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Features: RS232 To RS422 Converter
• Interface: RS-422⁄485
• Module Type: Adapter Card
• Mounting Type: Protective Enclosure
• Voltage, Supply: 115 VAC ± 10 VAC @ 50⁄60 Hz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLY AC POWER
COMMUNICATION LEDS
The AC7A/B should now be ready to use with your Optomux network. After all wiring connections are made, and
jumper settings have been checked, it is time to supply AC power to the AC7A/B. The AC7A requires 115 VAC at
50–60 Hz. The AC7B uses 220VAC at 50–60 Hz. Once power has been supplied to the AC7A/B, the LED labeled
PWR ON should become illuminated.
The communication LEDs are labeled with respect to the RS-422/485 side of the AC7A/B.
The TX (Transmit) LED will flash when the AC7A/B is transmitting data out its RS-422/485 port (i.e., data is entering
the RS-232 port and exiting the RS-422/485 port).
The RX (Receive) LED will flash when the AC7A/B is receiving data into its RS-485 port (i.e. data is entering
the RS-485 port and exiting the RS-232 port).
The RTS (Request to Send) LED will turn on when the AC7A/B is requesting to transmit data out its RS-422/485
port. The RTS output tells the other RS-422/485 device that the AC7A/B would like to send data.
The CTS (Clear to Send) LED will turn on when the AC7A/B is receiving a CTS signal from another RS-422/485
device. The received CTS signal tells the AC7A/B that the other RS-422/485 device is ready to receive data. In other
words, the received CTS signal gives the AC7A/B permission to transmit data out of its RS-422/485 port.
Note: The RTS and CTS lines are NOT used by Optomux, so the state of the RTS and CTS LEDs is not important
TX = RS-232 —> AC7A/B —> RS-422/485
RX = RS-232 <— AC7A/B <— RS-422/485
RTS = AC7A/B —> RS-422/485
CTS = AC7A/B <— RS-422/485
when an AC7A/B is communicating with Optomux I/O devices.
AC7A/B User’s Guide 15
INSTALLATION