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2. EXPLANATION OF MODULE FUNCTIONS
2.9 HR871 Card
II - 16
2.9 HR871 Card
[Block diagram]
R
S
2
3
2
C
R
TBUS
PLD
EEPROM
DeviceNet master module
STA1,STA2
LED
DPORT DNET
SIO
RS232C
DNM
[Explanation of functions]
The HR871 card functions as the DeviceNet master when the DeviceNet master module is added
on.
Memory EEPROM
Add-on connector
Communication connector
RS-232C connector for configuration
Monitor LED
[Connector layout diagram]
MS
NS
RTBUS
RUN
RDY
DNET SIO
DPORT
STA2 STA1
DNM
ISP
RS232
[Explanation of LEDs]
RUN : (Green) ON during communication
RDY : (Green) ON when hardware is correct
MS : (Green) ON during communication
NS : (Green) ON during communication
: (Red) ON when duplicate station No. setting occurs or bus off error occurs