Dwyer PPM - Manual (Page 12)

MPM, APM, PPM, & LTI Series Modbus ® Register Tables Serial Communication
Page 12
Register 1
Name Access
Limits or
Range 2
Units
Data
Type 3
Function
Code(s)
Comments
Number Address (hex)
40136
135
(0087)
Serial Byte-to-
Byte Timeout
Read Write 0 to 254 1/100 of Seconds Integer
03, 04,
06, 16
This is the timeout between bytes of a Modbus frame. Note that
a value less than the minimum value for the present baud rate
cannot be saved. Minimums are: 300 baud = 0.06 sec,
600 = 0.03, 1200 = 0.02 and 0.01 for 2400 to 19200. Changes
to this register are saved but don’t take effect until next meter
reset (Modbus command or power-up). Writing out of range
data results in a timeout of 2.54 seconds.
40137
136
(0088)
Function Mode Read Write 0 to 3 None Integer
03, 04,
06, 16
0 = Linear, 1 = Square Root, 2 = Exponent, and 3 = Round
Horizontal Tank
40138
137
(0089)
PV/Rate
Number of Points
Read Write 2 to 32 None Integer
03, 04,
06, 16
This register is only used when register 40137 is set to Linear.
40139
138
(008A)
Exponent Read Write 10001 to 29999 None Integer
03, 04,
06, 16
Actually represents 1.0001 to 2.9999.
Set register 40137 = 2
40140 – 40141
139 – 140
(008B – 008C)
Round Horizontal
Tank Diameter
Read Write 0 to 999.999 Inches Floating point
03, 04,
06, 16
Decimal point is fixed. The unit of measure is inches; the
volume calculation is in US gallons. The display may be re-
scaled to represent the volume in any engineering units.
40142 – 40143
141 – 142
(008D – 008E)
Round Horizontal
Tank Length
Read Write 0 to 999.999 Inches Floating point
03, 04,
06, 16
40144 – 40145
143 – 144
(008F – 0090)
Cutoff Read Write 0 to 999999 User defined Floating point
03, 04,
06, 16
Represents the cutoff value.
40146
145
(0091)
Total Count
Direction
Read Write Not applicable None Bit
03, 04,
06, 16
0 = count up, 1 = count down
40147 – 40148
146 – 147
(0092 – 0093)
Total Count
Preset
Read Write 0 to 999999999 User defined Floating point
03, 04,
06, 16
Same as 40302 – 40303 Relay 1 set point.
40149
148
(0094)
Grand Total
Count Direction
Read Write Not applicable None Bit
03, 04,
06, 16
0 = count up, 1 = count down
40150 – 40151
149 – 150
(0095 – 0096)
Grand Total
Count Preset
Read Write 0 to 999999999 User defined Floating point
03, 04,
06, 16
40152
151
(0097)
Programmable
User F1 Setting
Read Write 0 to 39 User defined Integer
03, 04,
06, 16
See Table 3.
40153
152
(0098)
Programmable
User F2 Setting
Read Write 0 to 39 User defined Integer
03, 04,
06, 16
See Table 3.
40154
153
(0099)
Programmable
User F3 Setting
Read Write 0 to 39 User defined Integer
03, 04,
06, 16
See Table 3.
40155
154
(009A)
Programmable
User Digital
Input 1 Setting
Read Write 0 to 43 User defined Integer
03, 04,
06, 16
See Table 3.