RS485-ISO Communications Adapter

The RS485-ISO is designed to take RS-232 from the communications port of the Smart Motor™ and convert it to RS-485. It incorporates the adapter into a 7 pin, 7W2, D-sub backshell. RS-485 provides improved noise immunity over cable lengths of up to 1,000 ft (305m). It also allows a network of up to 100 SmartMotors to be operated in parallel instead of daisy-chaining the communications from one motor to the next. This feature reduces the burden of coordination for many multi-axis applications. The converter circuit is entirely housed and protected by the supplied cable backshell. It draws power and ground from the SmartMotor™ main connector (pins 2 and 5). It also requires the use of the main connector G-Synch line (pin 1). The G-Synch line is used to bias the state of the balanced line, allowing motor-to-host communications. Firmware support for the RS485-ISO adapter is provided by the OCHN command. The OCHN command must reside in the stored user program for a motor to communicate correctly upon power-up. The RS485-ISO communications adapter can be ordered as part of a completed cable, or as a kit to be used in the creation of a cable.

Features
• Noise immunity.
• Extended range.
• Convenient size and mounting.
• Product compatible.
• Firmware supported.

Benefits
• Ideal for noisy industrial environments involving such things as TIG welding or plasma heads.
• Cable runs of 1,000 feet possible for remote applications (305m).
• Mounts neatly inside the cable connector backshell.
• The RS485-ISO converter is compatible with all SmartMotor™, firmware J3 or later.
• Firmware includes built in OCHN mode.

Electrical:
Bus DC line Voltage: 5VDC
Driver Output Voltage Unloaded 2VDC min, -2VDC min
Driver Output Voltage Loaded 2VDC, -2VDC
Receiver Voltage Range +12VDC to -7VDC

Mechanical:
Dimensions: see figure
Weight: 0.5 oz (14.2g)

Environmental:
Operating Temperature: 0 to 50° C
Storage Temperature: -20 to 70° C
Humidity: 0 to 90% non condensing