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This
feature reduces the burden of coordination for many multi-axis applications.
The converter circuit is entirely housed within the connector backshell.
It requires 5VDC, typically supplied by the first Servida Motor in
the chain.
The RS-485 A and B output signals are single ended and biased for
bus mastering.
With RS-485, all Servida Motors hear a message at the same instant
in time. There is no echoing of data from one motor to the next.
While that saves time, it also makes it necessary that each motor
have a unique address originating from its own program. It is also
imperative that the Servida Motor program not have an ECHO command.
They must remain in their non-ECHO default state to protect the
data bus. Use the SADDR command to set address, and the OCHN command
to open the communications port as RS-485
* To mate with these 4 pin connectors, the user needs:
MOLEX connector 50-57-9404 (Digikey
# WM2902-ND)
Crimp Terminal 16-02-0103 (Digikey # WM2512-ND.
Features
• Noise immunity.
•
Extended range.
•
Firmware supported.
•
Convenient size and mounting.
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.
•
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
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RS232485