Diagnostic Indicator Lights; Operation; Profibus Network Configuration - SymCom CIO-777-PR Programming Manual

DIAGNOSTIC INDICATOR LIGHTS

The unit is energized when power is applied between V+ and V- on the connector. The PBus and
OLC LEDs will flash until communication is established. The PBus communication status indicator
light will come on steady when a Profibus master is communicating with the unit. The OLC
communications status indicator light will come on steady when it is communicating to a 777-P
Series overload relay.

OPERATION

The CIO-777-PR Module is a DP-V0 device. Cyclical I/O is supported for the transfer of input and
output information.

PROFIBUS NETWORK CONFIGURATION

Cable Routing
Follow these general cable-routing guidelines:
Avoid areas of high temperature, moisture, vibration, or other mechanical stress.
Secure the cable where necessary to prevent damage.
Use cable ducts, raceways, or other structures to protect the cable.
Never route cables over, under or around sharp edges.
Avoid sources of electrical interference that can induce noise into the cable. Use the maximum
practical separation from such sources.
Maintain a minimum separation of 3.3 ft. (1m) from the following equipment:
o air conditioners and large blowers
o elevators and escalators
o radios and televisions
o intercom and security systems
o fluorescent, incandescent, and neon lighting fixtures
Maintain a minimum separation of 10 ft. (3m) from the following equipment:
o Line and motor power wiring
o Transformers
o Generators
o Alternators
Terminating Resistors
Profibus segments must be bus terminated as shown.
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FIGURE 3: Bus Termination
+5V
Line B
Line A
Data Ground
390Ω
220Ω
390Ω