Watlow MLS-PM, User Manual

Page: 110 / 144

Setup
MLS User’s Guide 97
Digital Input Testing
Use this menu to view the logic state of the 8 digital inputs as H (High--
the input is at 5 volts or is not connected) or L (Low--the input is at zero
volts). The menu displays inputs 1 to 8 from left to right. Since inputs
are pulled High when they are not connected, test an input by shorting it
to controller common and making sure this menu shows the correct state
for that input.
Using This Menu
• Short the digital input you are testing to controller common. When
you do that, the input's state should change to L.
•
Press Yes or No to advance to the next menu.
• Press Back to return to the Manual I/O test main menu.
Keypad Test
Use this menu to test the keypad.
Using This Menu
• Press any key to test the keypad. The MLS will display the name of
the key you have pressed.
• Press No twice to advance to the next menu.
Test Digital Output
Use this menu to select one of the digital alarm outputs to test in the next
menu.
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUT%
DIGITAL INPUTS
HHHHHHHH
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUT%
KEYPAD TEST
QUIT = "NO" + "NO"
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUT%
TEST DIGITAL
OUTPUT ? 34