Holding registers – Red Lion PAXCDC4 (MODBUS) User Manual
Page 4
HOLDING REGISTERS
* See Coil Table for register mapping and Coil Descriptions for functionality.
Notes:
1. Any registers marked with “——” are unused and will return a value of HEX <8000>.
2. If a value larger than 4095 is written to the AOR register, 4095 will be loaded.
3. TRX delay is the minimum time from the reception of the last character in the
MODBUS
Query until the response is started. The minimum delay value is equal to
2 character times (2 msec min.). The user can increase the delay time by writing to the TRX Delay register. Any value written to the TRX Delay register that is
less than the value calculated at power up will be ignored. The TRX Delay value is stored in E
2
PROM memory. On power-up, the calculated value is compared to
the value read back from the E
2
PROM. The greater of the 2 values will be used as the TRX Delay value and will be written to the TRX Delay register.
4. Numeric data is limited to value -19999 to 99999.
5. Numeric data is limited to the value listed for that parameter according to the meter’s literature.
4
Values less than 65,535 will be in (LO word). Values greater than 65,535 will continue into (HI word). Negative values are represented by two’s complement of the
combined (HI word) and (LO word).
HOLDING
REGISTER
PAX
4
PAXI
5
PAXCK/PAXTM
5
PAXDR
5
ACCESS
ACCESS
ACCESS
40001:
Input (HI)
Read Only
CTA (HI)
Timer (HI)
Read/Write
Rate A (HI)
Read Only
40002:
Input (LO)
Read Only
CTA (LO)
Timer (LO)
Read/Write
Rate A (LO)
Read Only
40003:
Total (HI)
Read Only
CTB (HI)
Counter (HI)
Read/Write
Rate B (HI)
Read Only
40004:
Total (LO)
Read Only
CTB (LO)
Counter (LO)
Read/Write
Rate B (LO)
Read Only
40005:
Min (HI)
Read Only
CTC (HI)
RTC Time (HI)
Read/Write
Rate C (HI)
Read Only
40006:
Min (LO)
Read Only
CTC (LO)
RTC Time (LO)
Read/Write
Rate C (LO)
Read Only
40007:
Max (HI)
Read Only
RTE (HI)
RTC Date (HI)
Read/Write
Total A (HI)
Read/Write
40008:
Max (LO)
Read Only
RTE (LO)
RTC Date (LO)
Read/Write
Total A (LO)
Read/Write
40009:
SP1 (HI)
Read/Write
Min (HI)
SP1 (HI)
Read/Write
Total B (HI)
Read/Write
40010:
SP1 (LO)
Read/Write
Min (LO)
SP1 (LO)
Read/Write
Total B (LO)
Read/Write
40011:
SP2 (HI)
Read/Write
Max (HI)
SP2 (HI)
Read/Write
Total C (HI)
Read/Reset
40012:
SP2 (LO)
Read/Write
Max (LO)
SP2 (LO)
Read/Write
Total C (LO)
Read/Reset
40013:
SP3 (HI)
Read/Write
SFA (HI)
SP3 (HI)
Read/Write
SFA (HI)
Read/Write
40014:
SP3 (LO)
Read/Write
SFA (LO)
SP3 (LO)
Read/Write
SFA (LO)
Read/Write
40015:
SP4 (HI)
Read/Write
SFB (HI)
SP4 (HI)
Read/Write
SFB (HI)
Read/Write
40016:
SP4 (LO)
Read/Write
SFB (LO)
SP4 (LO)
Read/Write
SFB (LO)
Read/Write
40017:
Polling1 *
Read/Write
SFC (HI)
SP1 Off (HI)
Read/Write
SFC (HI)
Read/Write
40018:
Reset *
Read/Write
SFC (LO)
SP1 Off (LO)
Read/Write
SFC (LO)
Read/Write
40019:
TRX Delay
3
Read/Write
LDA (HI)
SP2 Off (HI)
Read/Write
LDA (HI)
Read/Write
40020:
AOR
2
Read/Write
LDA (LO)
SP2 Off (LO)
Read/Write
LDA (LO)
Read/Write
40021:
CSR
Read/Write
LDB (HI)
SP3 Off (HI)
Read/Write
LDB (HI)
Read/Write
40022:
Terminate1
Read/Write
LDB (LO)
SP3 Off (LO)
Read/Write
LDB (LO)
Read/Write
40023:
LDC (HI)
SP4 Off (HI)
Read/Write
40024:
LDC (LO)
SP4 Off (LO)
Read/Write
40025:
SP1 (HI)
Timer Start (HI)
Read/Write
SP1 (HI)
Read/Write
40026:
SP1 (LO)
Timer Start (LO)
Read/Write
SP1 (LO)
Read/Write
40027:
SP2 (HI)
Counter Start (HI)
Read/Write
SP2 (HI)
Read/Write
40028:
SP2 (LO)
Counter Start (LO)
Read/Write
SP2 (LO)
Read/Write
40029:
SP3 (HI)
Timer Stop (HI)
Read/Write
SP3 (HI)
Read/Write
40030:
SP3 (LO)
Timer Stop (LO)
Read/Write
SP3 (LO)
Read/Write
40031:
SP4 (HI)
Counter Stop (HI)
Read/Write
SP4 (HI)
Read/Write
40032:
SP4 (LO)
Counter Stop (LO)
Read/Write
SP4 (LO)
Read/Write
40033:
Polling1 *
Polling1 *
Read/Write
Polling1 *
Read/Write
40034:
Polling2 *
Polling2 *
Read/Write
Polling2 *
Read/Write
40035:
TRX Delay
3
TRX Delay
3
Read/Write
TRX Delay
3
Read/Write
40036:
MMR
MMR
Read/Write
MMR
Read/Write
40037:
AOR
2
RTC Day
Read/Write
AOR
2
Read/Write
40038:
SOR
SOR
Read/Write
SOR
Read/Write
40039:
Reset *
Reset *
Read/Write
Reset *
Read/Write
40040:
40041:
Terminate1
Terminate1
Read/Write
Terminate1
Read/Write
40042:
Terminate2
Terminate2
Read/Write
Terminate2
Read/Write