Automated Logic ZN551 Technische Anweisungen - Seite 17
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Formatting the control
module
LED's
ZN551 Control Module • Rev. 3/17/2005
If you cannot communicate with a control module after downloading memory
to it, as a last resort, you can manually format the control module to erase its
memory.
Pull the screw terminal connector from the control module's power
1
terminals labeled Gnd and 24 Vac. Make sure the address switches are
not set to 0, 0.
Short the Format jumper's pins.
2
3
Insert the power screw terminal connector into the ZN551's power
terminals.
Continue to short the jumper until the Error LED flashes three times in
4
sync with the Run LED.
Remove the short.
5
6
Download memory to the ZN551.
The LED's on the ZN551 show the status of certain functions.
If this LED is on...
Power
Rx
Tx
DO#
The Run and Error LED's indicate control module and network status.
If Run LED shows...
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
5 flashes per second
5 flashes per second
7 flashes per second
17
Status is...
The ZN551 has power
The ZN551 is receiving data from the network segment
The ZN551 is transmitting data over the network segment
The digital output is active
And Error LED shows...
Off
2 flashes,
alternating with Run LED
3 flashes,
then off
4 flashes,
then pause
On
On
Off
7 flashes per second,
alternating with Run LED
© 2005 Automated Logic Corporation
Status is..
Normal
Five minute auto-restart delay
after system error
Control module has just been
formatted
Two or more devices on this
network have the same
ARC156 network address
Exec halted after frequent
system errors or control
programs halted
Exec start-up aborted, Boot is
running
Firmware transfer in
progress, Boot is running
Ten second recovery period
after brownout