
6. HARDWARE
175
(1) LEDs for master function
LED No.
(abbreviation)
Meaning
LED1 (CPU) Lights to indicate the CPU for the master function is run-
ning.
LED2 (TOKEN) Lights when the communication LSI (ASPC2) has a token
(right to transmit).
LEDB (PALM) Lights when a memory parity alarm occurs in the master
function circuit.
It is likely that the hardware is defective.
(2) LEDs for slave function (mounted on the add–on board)
LED No.
(abbreviation)
Meaning
LED1 (CPU) Lights to indicate the CPU for the slave function is run-
ning.
LED2 (COMM) Lights when PROFIBUS communication starts. It re-
mains to be on after the PROFIBUS communication is
suspended,
however.
LED3 (RUN) Lights to indicate that PROFIBUS communication is be-
ing performed normally.
LEDB (PALM) Lights when a memory parity alarm occurs in the slave
function circuit.
It is likely that the hardware is defective.
6.1.3.13Ethernet board, fast Ethernet board
Name Specification
Ethernet board A20B–8100–0271
Fast Ethernet board A20B–8100–0770
NOTE The Ethernet board cannot fit into the option slot nearest to the
LCD.
D Connector location
JNA
F–BUS backplane connector
Connector number Application
CD38 (for Ethernet board) 10BASE–T Ethernet interface
CD38R (for fast Ethernet board) 10/100BASE–TX Ethernet interface
D Card location
No card is mounted on the Ethernet board.