AC7 OPTO 22, AC7 Datasheet - Page 4

• 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

DATA SHEET
Form 466-030613
ENABLING SIGNALS
data. If you are fabricating your own cable, the required logic levels can be provided by "looping back" the appropriate pins on the
RS232 connector that attaches to your serial port. For example, when connecting the AC7 to a PC DB25 serial port, pins 5, 6, 8 and 20
must be tied together.
AC7, jumpers A through D may be used to enable the appropriate RS232 signals on your computer. The table below describes the
function of each of the jumpers. J1 is the RS232 connector on the AC7.
CONNECT AC7
common. The recommended colors are yellow, red, green, black and blue.
between the adapter card and OPTOMUX.
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Phone: [phone] • (800) 321-OPTO • Fax: [phone] • www.opto22.com
Fabricated Cable
Many serial ports monitor pins on the RS232 connector as an indication that the connected data equipment is ready to receive
Purchased Cable
If you are using a commercially prepared data cable that carries handshaking signals required by your RS232 port through to the
NOTE: These signals are provided for use by the host computer only -- AC7 uses only pins 2, 3 and 7 of the RS232 connector.
Connect the RS-422 cable to the Optomux network using two twisted pairs plus one additional insulated wire for the signal
Strip 1/8 to 1/4 inch insulation from both ends of each wire. Use the table below to connect the RS422 communications wires
CAUTION: Make sure the power is OFF while making or removing all connections to the AC7 and OPTOMUX.
Connect the RS422 communication wires as follows:
Installation (continued)
AC7 Terminal
To OPTOMUX (+) . . . . . . . . . . . . From Host (+)
To OPTOMUX (-) . . . . . . . . . . . . . . From Host (-)
From OPTOMUX (+) . . . . . . . . . . . To Host (+)
From OPTOMUX (-) . . . . . . . . . . . . . To Host (-)
AC7 +5 Return . . . . . . . . . . . . . . . . . COM
Inside Sales: (800) 321-OPTO • Product Support: (800) TEK-OPTO • [phone] • Fax: [phone] • E-mail: [e-mail]
Jumper
A . . . . . . . . . . . . . pin 20 (DTR) to +12V
D . . . . . . . . . . . . . pin 4 (RTS) to +12V
B . . . . . . . . . . . . . pin 6 (DSR) to pin 20 (DTR)
C . . . . . . . . . . . . . pin 8 (DCD) to pin 4 (RTS)
OPTOMUX Terminal
Connects
STAND ALONE ADAPTER CARDS
One Twisted Pair
Second Twisted Pair
Insulated wire which is typically from a third twisted pair
INTERFACES
TRADITIONAL
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