Automated Logic ZN551 User Manual

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

Automated Logic ZN551 Specifications

General

Brand	Automated Logic
Model	ZN551
Category	Network Router
Language	English