AMETEK Lx Series II Programming Manual - Manual (Page 164)

Programming Manual Lx \ Ls Series II
160
7.8 Remote Inhibit and Discrete Fault Indicator
The remote inhibit and discrete fault indicators are implemented through the respective INH and
FLT connections on the rear panel. Refer to the User's Manual for the electrical parameters.
7.8.1 Remote Inhibit (RI)
Remote inhibit is an external, chassis-referenced logic signal routed through the rear panel INH
connection, which allows an external device to signal a fault.
To select an operating modes for the remote inhibit signal, use:
OUTPut:RI:MODE LATChing | LIVE | OFF
LATChing causes a low-true signal on the INH input to disable the output. The only
way to clear the latch is by sending an OUTPut:PROTection:CLEAR
command while the INH input is false.
LIVE allows the RI input to disable the output in a non-latching manner. When
INH is low true, the output is disabled. When INH is high, it has no effect
on the output.
OFF disables the INH input.
7.8.2 Discrete Fault Indicator (DFI)
The discrete fault indicator is a chassis-referenced, open-collector logic signal connected to the
rear panel FLT connection, that can be used to signal external devices when a fault condition is
detected. To select the internal fault source that drives this signal, use:
OUTPut:DFI:SOURce QUEStionable | OPERation | ESB | RQS | OFF
QUEStionable selects the Questionable event summary bit (bit 3 of the Status Byte
Register)
OPERation selects the Operation Event summary bit (bit 7 of the Status Byte
Register)
ESB selects the Standard Event summary bit (bit 5 of the Status Byte
Register)
RQS selects the Request Service bit (bit 6 of the Status Byte Register)
OFF selects no DFI source
To enable or disable the DFI output, use:
OUTPut:DFI:STATe ON | OFF