RDR2S-A and I8O4 Hardware Installation Maintenance
24-10239-596 Rev. D
37
MAINTENANCE
This section provides maintenance instructions, operational testing procedures,
and information on replacement parts.
LEDs
The RDR2S-A and I8O4 modules have 4 LEDs:
• Power (Power): On during normal operation.
• Status (STATUS): Blinks every second when unit is operational.
• Transmit (XMIT): Blinks when a character is transmitted to the controller’s
S300 bus.
• Receive (RCV): Blinks when a character is received from the controller’s
S300 bus.
Routine Maintenance
For the RDR2S-A and I8O4 maintenance, perform the operational testing
monthly (see Testing Procedure on page 37).
Impaired Performance Conditions
Testing Procedure
To check for proper operation of the RDR2S-A:
1. Verify that the “Power” LED is ON.
2. Verify that the “STATUS” LED flashes once per second.
3. Verify that the “XMIT” and “RCV” LEDs blink.
Condition Information Location
Unit environment not as specified See Technical Specifications on page 36.
Unit power and grounding not as
specified
See Power Supply on page 19 and Ground
on page 23.
Cable length or type not as specified See Cable Requirements on page 17.
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