Metasys TC-9100 Series - Digital Output Override Control; Overrides by Supervisory System; Reverse Action Command; Supervisory Functions Configuration Items

Technical Bulletin—TC-9100 Universal Controller 45
Each Digital Output may be controlled directly by the supervisory system
by setting the corresponding Enable Bit. When the Enable Bit is set, the
digital output will follow the status of the Control Command Bit and the
output control module for the digital output no longer has control. It is
recommended that the Digital Output Override Control feature is only
used for digital outputs which are not used in the controller configuration,
or to override outputs configured as on/off type outputs. To override
digital outputs configured as PAT, DAT, 2-stage on/off, or 3-speed fan
control type outputs, it is recommended to use the Hold mode on the
control module that is connected to the output module.
Output
Module
OCMn
Digital
Output
DOn
Control
Module
PMn
OCM
Hold Mode (HLD)
+
Set OCM
Control Enable (MSK)
+
Control Command (ODC)
Figure 16: Overrides by Supervisory System
When neither of the digital inputs is configured as a Reverse Action type,
the action of any programmable module configured as a Controller
Algorithm may be reversed by a command from the supervisory system
to the REVC Item (Address 87 hex, Bit 8). The Reverse Action status of
the controller can be read at the REVL Item. Refer to
Programmable
Module Configuration, Controller Algorithms 1 to 6 – General.
Note: If one of the digital inputs
is configured as a Reverse Action type,
the controller will respond
only to the digital input (i.e., the
REVC command will be ignored), and the REVL Item will always
show the status of the digital input.
There is only one configuration parameter for supervisory system
functions, as follows:
Table 23: Supervisory Functions Configuration Items
Item Tag Type Description
TCS2 2 Bytes
Controller Options 2
(85 hex)
(133 dec)
Bit 4 0 = Alternate Mode Timing = 2 hours.
1 = Alternate Mode Timing = 1 hour.
The parameters that are dynamically generated and received by the
controller for supervisory functions are listed below. Refer to
Appendix 1,
Table 1, Item List for the Item addresses.
Digital Output
Override Control
Reverse Action
Command
Configuration
Parameters
Dynamic
Parameters