L-IP User Manual
134
LOYTEC
Version 6.1
LOYTEC electronics GmbH
Bus Loop Monitor Object
nvoLoopOK
nvoLoopStatus
Figure 134: Bus Loop Monitor Object.
SNVT_switch nvoLoopOK
This network variable represents the loop state. It can have the following values:
{100, ON}: The loop is closed.
{0, OFF}: The loop is open.
{0, INVAL}: Bus loop monitoring is disabled.
SNVT_state_64 nvoLoopStatus
This network variable represents the current state of the loop object. Currently the following
bits are used:
bit0
: 0 if bus loop monitoring is enabled, 1 if bus loop monitoring is disabled. Bus loop
monitoring can be disabled either manually (e.g. by disabling the object) or because the
L-IP is in twin router mode and the device is in standby mode and thus inactive.
bit1
: 0 if the loop is closed, 1 if the loop is open.
9.7.3 Device Monitor Object
Figure 135 shows the Device Monitor Object functional block. This functional block is
responsible for the device monitoring (see Section 9.2.3). It has the following network
variables:
SNVT_state_64 nvoNodeMonStatus
This network variable represents the current state of the device monitor object. Currently
the following bits are used:
bit0
: 0 if device monitoring is enabled, 1 if device monitoring is disabled. Device
monitoring can be disabled either manually (e.g. by disabling the object) or because the
L-IP is in twin router mode and the device is in standby mode and thus inactive.
bit1
: 0 if all monitored nodes node is reachable and online or was not yet queried, 1
otherwise.