L
ON
W
ORKS
I
NTERFACE
M
ODULE
O
PEN
N
ET
C
ONTROLLER
L
ON
W
ORKS
I
NTERFACE
M
ODULE
U
SER
’
S
M
ANUAL
15
Neuron Chip I/O Pins and Status LEDs
Neuron Chip I/O pins and status LEDs are assigned as listed below:
Registers
The
OpenNet Controller
CPU module exchanges communication data through the registers in the L
ON
W
ORKS
interface
module. The register addresses are listed in the table below:
I/O Pin No.
I/O
Signal Name
Description
0
Output
RUN LED
Controls the RUN LED (green).
0: ON, 1: OFF
1
Output
ERR LED
Controls the ERR LED (red).
0: ON, 1: OFF
2
Output
I/O LED
Controls the I/O LED (red).
0: ON, 1: OFF
3
Input
—
The IO.3 pin must be defied as an input when the application program is
modified by the user. See page 19.
4
Input
RUN
Monitors the CPU module operating status.
0: CPU stopped, 1: CPU in operation
5
—
unused
6
Output
Failure
Error signal to the CPU
0: The Neuron Chip cannot write data to registers. When modifying the appli-
cation program, make sure to turn this pin to 0 when an unrecoverable
critical error occurs.
1: Normal operation
7-10
—
unused
Address
Name
Data Flow Direction
Description
CPU
Module
Interface
Module
C000h - C007h
Data register
(8 bytes)
Allocate network variables to these
addresses to exchange data between the
CPU and inter face modules.
C008h - C00Fh
Data register
(8 bytes)
C010h - C011h
reser ved
—
—
Do not write data into this area.
C012h
Error data
Use this address to read error data from the
inter face module.
C013h
I/O counts
Use this address to store the byte counts of
transmit/receive data selected in WindLDR
Function Area Settings.
C014h - C017h
reser ved
—
—
Do not write data into this area.
C018h
Software version
Use this address to write the user applica-
tion software version number (use any num-
ber other than 00h).
C019h
Expansion module ID
Use this address to write the user program
module ID (use a number 40h through 7Fh).
C01Ah - CFFFh
reser ved
—
—
Do not write data into this area.
