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Memory Map
NOTE: Modbus refers to the hexadecimal register location. These parameters are
formatted as unsigned 16 bit integers. Any real number such as temperature can be
evaluated as a signed number, other parameters are bit mapped words that must be
evaluated as single bits are bit groups.
HEX
DEC
PARAMETER
00
0
Not used
01
1
TIME CONTROL
SIOSET
02
2
TC_ZERO
TC_SPAN
03
3
MV_ZERO
MV_SPAN
04
4
PF
11/14/2006
BLOCK 0
DESCRIPTION
LOW BYTE - TIMER CONTROL
BIT 0 – Timer Disabled (0), Timer Enabled (1)
BIT 1 – 7 SPARE
HIGH BYTE – SIO SETUP
BITS 8 – 9 PARITY SETTING
00 = Even Parity, 7 bits, 1 Stop bit
01 = No Parity, 8 bits, 1 Stop bit
10 = Odd Parity, 7 bits, 1 Stop bit
BITS 10 – 11 RESPONSE DELAY
0 = No delay applied to response
1 = 10ms delay applied to response
2 = 20ms delay applied to response
3 = 30ms delay applied to response
BITS 12 – 14 BAUD SELECT
000 = 76.8K
001 = 38.4K
010 = 19.2K (DEFAULT)
011 = 9600
100 = 4800
101 = 2400
110 = 1200
111 = 600
BIT 15 HOST FORMAT
0 = MSI (PROP)
1 = MODBUS (DEFAULT)
LOW BYTE - TC ZERO CALIBRATION
NUMBER
HIGH BYTE – TC SPAN CALIBRATION
NUMBER
LOW BYTE – MV ZERO CALIBRATION
NUMBER
HIGH BYTE – MV SPAN CALIBRATION
NUMBER
PROCESS FACTOR FOR CARBON OR
DEWPOINT
RANGE = 0 to 4095
Page 12 of 23
READ/WRITE
READ ONLY
READ/WRITE
READ/WRITE
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READ/WRITE
Rev. 14
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