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6.3 Information Available via ISD
The following information can been obtained from the ISD chain and a diagnostic unit or ISD enable Safety Controller.
Table 1: Cyclic Data about the Chain
Short Name Data Format Meaning of data
Count Mismatch 1/0 The number of devices in the chain does not match the configuration
Order Mismatch 1/0 The order of the devices in the chain does not match the configuration
No ISD Data Detected 1/0 No (or corrupted) ISD data being transmitted (being received by diagnostic
device)
Incompatible Device 1/0 The chain or a unit in the chain has data but not ISD data
ISD detected not
configured
1/0 ISD data is detected on inputs that are not configured as ISD input
Terminator Missing 1/0 Terminator plug not present (or inputs to first device low)
Actuator not taught 1/0 Unique or high unit has not been taught an actuator
Wrong actuator detected 1/0 Wrong actuator presented to a unique or high coded sensor
Internal unit error 1/0 A unit in the chain has an internal error
Output fault detected 1/0 A unit in the chain has an output fault and will turn off after the switch off
delay period
Table 2: Individual Unit Data—Flags
Short Name Data Format Meaning of data
Actuator Detected 1/0 The SI-RF sensor detects an actuator
Note: It does not have to be the taught actuator.
Wrong Actuator 1/0 SI-RF sensor detects an actuator with a "received code" that does not match
the "expected code". For code values, see Table 4 on p. 23.
Sensor not paired 1/0 High or Unique sensor that has not been taught an actuator
Output 1 1/0 Output 1 is On
Output 2 1/0 Output 2 is On
Marginal Range 1/0 An actuator is detected but is staying at the extreme end of the detection
range (13 mm to 15 mm away from the sensor)
Input 1 1/0 ISD device input 1 is On
Input 2 1/0 ISD device input 2 is On
Local Reset Expected 1/0 An ISD device with the latch feature requires a reset
Operating Voltage
Warning
1/0 Voltage to the ISD device is at the limit of specifications
ISD Data Error 1/0 ISD error bit, corrupted data was received from the SI-RF ISD chain of
switches
Safety Input Fault 1/0 The system detected a fault on a safety input of an ISD device, power cycle
required
Output Error 1/0 ISD Device detects an output short to voltage or ground. This starts the
"output switch-off timer" counter. For code values, see Table 4 on p. 23.
Operating Voltage Error 1/0 Voltage to the ISD Device is above (over 30 V DC) or below (less than 19.2 V
DC) limit of range
SI-RF Non-Contact RF Safety Switch
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