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Chapter 5 Programming
5.9 Digital I/O
The Digital I/O (Optocoupled Inputs, Relay Outputs) option must be fitted in order for the options in this section to
work. If you do not have the option fitted you should ensure that all inputs are programmed off.
The Digital I/O menu option allows the user to select what type of signal opens the output contacts and what
function the input signals will perform. The user can also program custom event messages.
To program the Digital I/O options:
From the Program menu use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Digital I/O and then press the ENTER
button. The Digital I/O menu will be displayed with three options: Contact outs, Switches in, and Event msgs.
Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to select the option you wish to program and then press the ENTER button. The
options are described in the following sections.
5.9.1 Contact outs
The Contact outs option allows the user to select what type of signal controls the Contact Out relays.
To set the Contact Out options:
From the Digital I/O menu, use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Contact outs and press the ENTER
button. The Contact outs menu will be displayed with four menu options: Alarms clear, ACK key, Failsafe,
and Reflash. These options are described in the following sections.
5.9.1.1 Alarms clear
The Alarms clear option opens the Contacts Out when the Alarms are cleared (default), else they
remain latched.
To turn the Alarms clear option on or off:
From the Contact outs menu use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Alarms clear and press the
ENTER button. The display will read either "opn clr=YES*"' (default) or "opn clr=NO*". Press the YES button
to select whether the Contact outs should open when the Alarms are cleared or the NO button to not open.
When the desired selection is displayed, press the ENTER button to return to the Contact outs menu.
NOTE: To make the outputs latching, set Alarms clear to NO and ACK key to YES.
5.9.1.2 ACK key
The ACK key option opens the Contacts Out when the ACKnowledge key is pressed.
To turn the ACK key option on or off:
From the Contact outs menu use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight ACK key and press the
ENTER button. The display will read either "opn ack=YES*"' or "opn ack=NO*". Press the YES button to
select whether the Contact outs should open when the ACK key is pressed or the NO button to not open.
When the desired selection is displayed, press the ENTER button to return to the Contact outs menu.
NOTE: The ACK button position, top left corner of the screen is always active, so even though the ACK
button is not blinking, the contacts can still be reset by pressing this area of the screen.
5.9.1.3 Failsafe
The Failsafe option allows the Contacts Out to function as Failsafe Contacts. This reverses the logic so
a contact which is normally OPEN will be energized. The Failsafe will drop out in the event of a power
failure and indicate an alarm.
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