Motorola V186 User Manual - Page 27

operation to force a value on the output by ignoring the user program value mask.

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Digital Output Relay Modules between the required position and the back indication signal is reported to the CPU and is available to the user program. In some applications it is necessary to inhibit relay output operation when attending the site for safety reasons. In all DO relay modules, it is possible to inhibit all relays per DO module. When a module is configured to enable relay inhibiting, the power to the relays is provided from the power supply via a dedicated power line (12V DO), controlled from the "12V DO" input (TB located on the power supply module front panel). When the input's terminals are shorted, the relays are operational. When the input's terminals are open, the relays are inhibited (EE relays in 0 position and ML relays do not change state.) The user program can monitor the relay inhibiting status and act accordingly. Also, when the module's relays are inhibited, any mismatch between the relay position and the output logical state is ignored. Each output can be configured to "Keep Last Value" (KLV) or to a "Predefined Value" (PDV 0 or 1). This value is executed when the user program stops or when the module has no communication with the CPU module. Also, the PDV can be used during normal operation to force a value on the output by ignoring the user program value (mask). In the ML relay modules, it is possible to configure the module to reset all the ML relays positions on startup. This is set in the STS site configuration. Parameter Selection DO Keep Last Value & PreDefined Value DO Mask KLV/PDV PDV = 0/1 No /Yes Reset DO at Startup Disable/Enable Relay Inhibiting Disable/Enable (SW selectable) Default Setup KLV Per Module/ Input Output No Output Disable Disable Module Module Parameter Setup Location Application Programmer I/O link table Application Programmer I/O link table Site configuration Site configuration Each DO module can be switched by the user program to Sleep Mode. In Sleep Mode, the module does not function and the power consumption is minimized. The DO module can be diagnosed and monitored using the STS Hardware Test utility. This test verifies that the module is operational, presents the module configuration and shows the actual value of each output. It is also possible to change the DO's value. In the Hardware Test utility, it is possible to set the module to Freeze Mode. In this mode, the 23

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Digital Output Relay Modules
between the required position and the back indication signal is reported to the CPU and is
available to the user program.
In some applications it is necessary to inhibit relay output operation when attending the
site for safety reasons. In all DO relay modules, it is possible to inhibit all relays per DO
module.
When a module is configured to enable relay inhibiting, the power to the relays is
provided from the power supply via a dedicated power line (12V DO), controlled from
the “12V DO” input (TB located on the power supply module front panel). When the
input’s terminals are shorted, the relays are operational. When the input’s terminals are
open, the relays are inhibited (EE relays in 0 position and ML relays do not change state.)
The user program can monitor the relay inhibiting status and act accordingly. Also, when
the module’s relays are inhibited, any mismatch between the relay position and the output
logical state is ignored.
Each output can be configured to “Keep Last Value” (KLV) or to a “Predefined Value”
(PDV 0 or 1). This value is executed when the user program stops or when the module
has no communication with the CPU module. Also, the PDV can be used during normal
operation to force a value on the output by ignoring the user program value (mask).
In the ML relay modules, it is possible to configure the module to reset all the ML relays
positions on startup. This is set in the STS site configuration.
Parameter
Selection
Default Setup
Per Module/
Input
Parameter
Setup Location
DO Keep Last
Value & Pre-
Defined Value
KLV/PDV
PDV = 0/1
KLV
Output
Application
Programmer I/O
link table
DO Mask
No /Yes
No
Output
Application
Programmer I/O
link table
Reset DO at
Startup
Disable/Enable
Disable
Module
Site
configuration
Relay Inhibiting
(SW selectable)
Disable/Enable
Disable
Module
Site
configuration
Each DO module can be switched by the user program to Sleep Mode. In Sleep Mode,
the module does not function and the power consumption is minimized.
The DO module can be diagnosed and monitored using the STS Hardware Test utility.
This test verifies that the module is operational, presents the module configuration and
shows the actual value of each output. It is also possible to change the DO’s value. In the
Hardware Test utility, it is possible to set the module to Freeze Mode. In this mode, the
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