136 NFS2-3030 Programming Manual — P/N 52545:A 11/29/2005
System Troubles
STYLE 6 NEG. LOOP x There is a short circuit on the negative side of loop x. Style 6 and Style 7 are supervised methods of
communicating with addressable devices. If the control panel detects a trouble (open or short), it
will drive both ends of the loop, maintaining communication in an unsupervised method. The
latching trouble will display on the panel as a Style 6 trouble until you correct the condition and
press reset. Style 7 configuration of the SLC requires the use of ISO-X modules.
STYLE 6 SHORT LOOP x
Style 6 and Style 7 are supervised methods of communicating with addressable devices. If the
control panel detects a trouble (open or short), it will drive both ends of the loop, maintaining
communication in an unsupervised method. The latching trouble will display on the panel as a
Style 6 trouble until you correct the condition and press reset. Style 7 configuration of the SLC
requires the use of ISO-X modules.
SYSTEM INITIALIZATION One or more devices (detectors or modules) can not report activation. This can occur following
system startup, when exiting Walk Test, or following a device trouble of No Response.
SYSTEM TROUBLES
TROUBLE MESSAGE TYPE TROUBLE DESCRIPTION
Table H.2 System Trouble Descriptions (3 of 3)
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