Honeywell HC900 Reference Guide

Function Blocks
RTMR Resettable Timer Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 331
2/07
RPRES = Remote Preset (0.0 – 99999.9)
If
Time-up, RPRES represents Stop value in seconds
If
Time -down, RPRES represents Start value in seconds
PREL = Preload (0.0 – 99999.9)
If
Time-up, PREL represents Start value in seconds
If
Time-down, PREL represents Start value in seconds
Outputs
TIME
= Elapsed time (for TIM_DN input =OFF), Time Remaining (for TIM_DN input = ON)
OUT = Output (Digital) turned ON when Preset value is reached or time reaches 0, depending on TIMDN
input status
Block properties
Double click on the function block to access the function block properties dialog box.
Configuration parameters
Table 97 RTMR configuration parameters
Properties Group Parameter Index # Parameter Description Value or Selection
Presets
Local
Preset
0 Local Preset
Click Radio Button to
select
Enter a value in the field
1 to 99999
Remote Preset
1
ON = use remote preset Click on radio button to
select
Use Preload
2
YES = use external preload
rather than zero for starting or
stopping
NO = Use default (0 second)
Click on radio button to
select

Honeywell HC900 Specifications

General

Series	HC900
Redundancy	Optional
Programming Language	Function Block Diagram, Ladder Logic, Structured Text
Inputs	Analog, Digital
Outputs	Analog, Digital, Relay
Display	Optional
Control	PID, Advanced Control
Power Supply	24V DC or 100-240V AC
Storage Temperature	-40°C to 85°C
Humidity	5% to 95% non-condensing
Communication Protocols	Modbus, Ethernet