Hr871 Card - Mitsubishi Electric MELDAS C6 Maintenance Manual

2.9 HR871 Card

[Block diagram]
RTBUS
PLD
STA1,STA2
[Explanation of functions]
The HR871 card functions as the DeviceNet master when the DeviceNet master module is added
on.
Memory
Add-on connector
Communication connector
RS-232C connector for configuration
Monitor LED
[Connector layout diagram]
RTBUS
[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
2. EXPLANATION OF MODULE FUNCTIONS
2.9 HR871 Card
EEPROM
LED
DPORT
DeviceNet master module
EEPROM
DNET SIO
DPORT
STA2 STA1
II - 16
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SIO
DNET
MS
RUN
RDY
ISP
NS
2 C
2 3
R S