Address descriptions
- Last UpdatedJul 29, 2024
- 3 minute read
The address descriptions consist of the register type, its item name and the allowable range of values, the default data type, allowable suffixes (if any), and allowable access methods.
|
Register Type |
Item Name |
Data Type |
Access |
|
Discrete Input |
X |
Bit |
Read Only |
|
Discrete Output |
Y |
Bit |
Read/Write |
|
Control Relay |
C |
Bit |
Read/Write |
|
Constant Memory |
V |
Word |
Read/Write |
|
Variable Memory |
K |
Word |
Read/Write |
|
Timer/Count Preset Memory |
TCP |
Word |
Read/Write |
|
Timer/Count Count Memory |
TCC |
Word |
Read/Write |
|
Word Input Memory |
WX |
Word |
Read/Write |
|
Word Output Memory |
WY |
Word |
Read/Write |
|
System Status |
STW |
Word |
Read/Write |
|
Drum Step Preset |
DSP |
Word |
Read/Write |
|
Drum Count Preset |
DCP |
Bit |
Read/Write |
|
Drum Current Count |
DCC |
Word |
Read Only |
Note: In the Channel Selector screen, if you select the Serial/Ethernet field as Serial (NITP) or Serial (TBP), the Drum memory registers DCC, DCP, and DSC are not supported.
Supported register types
The following registers are implemented in the Communication Driver which are PID Control and Analog Alarm Data Elements.
|
Register Type |
Item Name |
|
Loop Process Variable |
LPV |
|
Loop Setpoint |
LSP |
|
Loop Output |
LMN |
|
Loop Bias |
LMX |
|
Loop Error |
LERR |
|
Loop Gain |
LKC |
|
Loop Rate |
LTD |
|
Loop Reset |
LTI |
|
Loop V-flags |
LVF |
|
RAMP/SOAK flags |
LRSF |
|
Analog Alarm Process Variable |
APV |
|
Analog Alarm Setpoint |
ASP |
|
Analog Alarm flags |
AVF |
|
Loop Process Variable High Limit |
LPVH |
|
Loop Process Variable Low Limit |
LPVL |
|
Analog Alarm Process Variable High Limit |
APVL |
|
Analog Alarm Process Variable Low Limit |
APVH |
|
Loop Sample Rate (in seconds) |
LTS |
|
Analog Alarm Sample Rate (in seconds) |
ATS |
|
Loop High Alarm Limit |
LHA |
|
Loop Low Alarm Limit |
LLA |
|
Loop Orange Deviation Alarm Limit |
LODA |
|
Loop Yellow Deviation Alarm Limit |
LYDA |
|
Loop Setpoint High Limit |
LSPH |
|
Loop Setpoint Low Limit |
LSPL |
|
Most-significant word of Loop C-flags |
LCFH |
|
Least-significant word of Loop C-flags |
LCFL |
|
Loop C flags (combination of LCFH and LCFL) |
LCF |
|
Loop High-High Alarm Limit |
LHHA |
|
Loop Low-Low Alarm Limit |
LLLA |
|
Loop Rate-of-Change Alarm Limit (in Engineering Units per minute) |
LRCA |
|
Loop Alarm Deadband |
LADB |
|
Analog Alarm High Alarm Limit |
AHA |
|
Analog Alarm Low Alarm Limit |
ALA |
|
Analog Alarm Orange Deviation Alarm Limit |
AODA |
|
Analog Alarm Yellow Deviation Alarm Limit |
AYDA |
|
Analog Alarm Setpoint High Limit |
ASPH |
|
Analog Alarm Setpoint Low Limit |
ASPL |
|
Most-significant word of Analog Alarm C-flags |
ACFH |
|
Least-significant word of Analog Alarm C-flags |
ACFL |
|
Analog Alarm C flags (combination of ACFH and ACFL) |
ACF |
|
Analog Alarm High-High Alarm Limit |
AHHA |
|
Analog Alarm Low-Low Alarm Limit |
ALLA |
|
Analog Alarm Rate-of-Change Alarm Limit (in Engineering Units per minute) |
ARCA |
|
Analog Alarm Alarm Deadband |
AADB |
|
Analog Alarm Error |
AERR |
|
Loop Derivative Gain-limiting coefficient |
LDK |
|
Loop RAMP/ SOAK Step Number |
LRSN |
|
Loop Alarm/ Alarm Acknowledge flags |
LACK |
|
Analog Alarm/ Alarm Acknowledge flags |
AACK |
|
Loop Peak Elapsed Time Value Represents the elapsed time from when the process is scheduled until it completes execution (TI545,TI555,TI575). |
LPET |
|
Analog Alarm Peak Elapsed Time Value Represents the elapsed time from when the process is scheduled until it completes execution (TI545 , TI555 , TI575). |
APET |
|
SF PGM Peak Elapsed Time Value Represents the elapsed time from when the process is scheduled until it completes execution(TI545, TI555,TI575). |
PPET |
Note: In order to use these registers, you need to configure them in the PLC using the PID Loop Directory and Analog Alarm Directory menus.