
Item Code
C board A20B–8100–0330
Serial communication board
R.B./DNC2: RS232C I/F A20B–8100–0334
R.B./DNC2: RS422 I/F A20B–8100–0335
DNC1: RS485 I/F A20B–8100–0336
JNA
F–BUS backplane
connector
The connector is mounted on a serial communication board.
JD5L: RS232C interface
JD6L: RS422/485 interface
D LED display when an error occurs j: Off J: On
CBA Status
jjJ The CPU is not yet started (reset state).(*1)
JJj A DRAM parity error occurred.
jJj A bus error occurred in the CPU on this board.
Jjj An error occurred in the local bus on this board.
NOTE
1 The LEDs display this pattern because the CPU is in the
reset state immediately after power–up.
2 If the LEDs display any of the patterns, the hardware may
be defective (except in the reset state at power–up).
4.4.5
C Board, Serial
Communication Board
D Specifications
D Mounting positions of
connectors, LEDs, etc.
D LED display
4. STAND–ALONE TYPE i SERIES HARDWARE
GFKE-0222-EN
302