Dwyer PPM - Manual (Page 11)

MPM, APM, PPM, & LTI Series Modbus ® Register Tables Serial Communication
Page 11
Register 1
Name Access
Limits or
Range 2
Units
Data
Type 3
Function
Code(s)
Comments
Number Address (hex)
40122
121
(0079)
Units 4 Read Write Not applicable None Byte
03, 04,
06, 16
Represents the Modbus Little Display MSD-3 value. The hex
value represents the allowable ASCII character.
40123
122
(007A)
Units 5 Read Write Not applicable None Byte
03, 04,
06, 16
Represents the Modbus Little Display MSD-4 value. The hex
value represents the allowable ASCII character.
40124
123
(007B)
Units 6 Read Write Not applicable None Byte
03, 04,
06, 16
Represents the Modbus Little Display MSD-5 (which is the
LSD) value. The hex value represents the allowable ASCII
character.
40125
124
(007C)
Display Intensity Read Write 1 to 8 None Integer
03, 04,
06, 16
8 is the brightest level. Writing out of range data results in level
1 or 8.
40126
125
(007D)
Adjust Value Read Write -500 to 500 1/10 of °C or °F Integer
03, 04,
06, 16
Actually represents -50.0 to +50.0. Offset value is only applied
to temperature inputs. If Adjust is greater than 27.7°C and the
temperature units are switched to °F, it will be set to 50.0 (lower
than -27.7, set to -50.0).
40127
126
(007E)
RTD Total Value Read Write 1 to 10 None Integer
03, 04,
06, 16
Value represents the number of parallel RTDs connected to the
signal input. Any other value than these results in a setting of 1.
40128
127
(007F)
Lo Gate Setting Read Write 1 to 999 None Integer
03, 04,
06, 16
Actually represents 0.1 to 99.9 setting.
40129
128
(0080)
High Gate Setting Read Write 20 to 9999 None Integer
03, 04,
06, 16
Actually represents 2.0 to 999.9 setting.
40130
129
(0081)
Filter Setting Read Write
0, 2 to 199
or
202 to 250, 900
Unit-less Integer
03, 04,
06, 16
Display filtering. 0 = no filtering. 2 to 199 = old + ((new -
old)/Filter). For pulse input 900 = Hi-Speed, 202 to 250 = Lo-
Speed where the range is 2 to 50.
40131
130
(0082)
Bypass Setting Read Write 2 to 999
Percent of full
scale or °F
Integer
03, 04,
06, 16
Actually represents 0.2 to 99.9. If the input steps greater than
the bypass value, it will be displayed immediately, with no
filtering occurring. The number represents percent of full-scale
for process inputs and °F for temperature inputs. No effect if
filter = 0.
40132
131
(0083)
Serial Address Read Write 1 to 247 None Integer
03, 04,
06, 16
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 an address of 247.
40133
132
(0084)
Serial Baud Rate Read Write 0 to 6 None Integer
03, 04,
06, 16
0 = 300, 1 = 600, 2 = 1200, 3 = 2400, 4 = 4800, 5 = 9600, &
6 = 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 baud rate of 2400.
40134
133
(0085)
Serial Transmit
Delay
Read Write 0 to 199 ms Integer
03, 04,
06, 16
Transmit delay to minimize collisions on the RS-485 network.
40135
134
(0086)
Serial Parity Read Write 0 to 3 None Integer
03, 04,
06, 16
0 = None with 1 stop bit, 1 = None with 2 stop bits, 2 = Odd,
3 = Even. Changes to this register are saved but don’t take
effect until next meter re-initialization (Writing 0xFF00 to 40299
or power-up). Writing out of range data results in a parity setting
of Even.