Sensia CamCor User manual

CamCor™
Modbus Protocol Manual
Manual No. 50284150, Rev. 01

Important Safety Information
Symbols and Terms Used in this Manual
!WARNING: This symbol identies information about practices or circumstances that can lead to personal injury or
death, property damage, or economic loss.
Important Indicates actions or procedures which may affect instrument operation or may lead to an instru-
ment response which is not planned.
Symbols Marked on Equipment
Attention! Refer to manual Protective (earth) ground
Technical Support Contact Information
Global headquarters:
Sensia LLC
200 Westlake Park Blvd
Houston, TX 77079
CamCor is a trademark of Sensia.
Modbus is a registered trademark of the Modbus Organization, Inc.
All Rights Reserved.
Manual No. 50284150, Rev. 01
September 2015

Contents
Important Safety Information .................................................................................................................................................. ii
Section 1—Modbus Protocol........................................................................................................................... 5
Introduction .............................................................................................................................................................................5
Communications .....................................................................................................................................................................5
Optional Modbus Communication Baud Rate Setting .....................................................................................................5
Standard Modbus Function Codes ..................................................................................................................................6
Exception Response .......................................................................................................................................................6
Slave Addresses..............................................................................................................................................................6
Section 2—Data Types ..................................................................................................................................... 9
Data Formats ..........................................................................................................................................................................9
Unsigned Short Integer ...................................................................................................................................................9
Packed ASCII ..................................................................................................................................................................9
Section 3—CamCor Modbus Register Maps.................................................................................................11
Using CamCor Modbus Maps .............................................................................................................................................. 11
Access Types ................................................................................................................................................................ 11
CamCor-Specic Modbus Protocol Constraints ............................................................................................................ 11
Updating Intervals ......................................................................................................................................................... 11
Modbus Registers................................................................................................................................................................. 11
Device and System Information .................................................................................................................................... 11
Alarm Status Information ...............................................................................................................................................12
Communications Alarm Counter....................................................................................................................................12
Device, Sensor and Slave Address Conguration.........................................................................................................13
Damping Time Conguration .........................................................................................................................................14
Output Conguration .....................................................................................................................................................14
Density Conguration ....................................................................................................................................................16
Alarm/Status Conguration ...........................................................................................................................................16
Flow Conguration ........................................................................................................................................................17
Maintenance Conguration ...........................................................................................................................................17
Security Conguration ...................................................................................................................................................17
Calibration and Testing ..................................................................................................................................................18
Holding Registers ..........................................................................................................................................................18
Section 4—Reference Tables ........................................................................................................................ 23
iii
CamCor™Modbus Protocol Table of Contents

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iv
Table of Contents CamCor™Modbus Protocol

Section 1—Modbus Protocol
This manual is for use with maintenance board rmware version 3.05.
Introduction
The communications protocol for CamCor CT Series and PRO Series is in accordance with Modicon, Inc. RTU Mode
Modbus as described in Modicon Modbus Protocol Reference Guide, PI-MBUS-300 Rev. J, June 1996. All registers are
implemented as 4X or holding registers. Reading of registers is implemented via Function Code (03H) (Read Holding
Registers). Writing to registers is implemented via Function Code 16 (10H) (Preset Multiple Registers).
Communications
CamCor’s Modbus communications allow host devices (PC, sequencer, etc.) to connect to slave devices via RS-485 con-
nection. Modbus communication is based on the Master-Slave system, where host devices are designated as “master”
and the Coriolis meter(s) is designated as “slave.” The system is Modbus-protocol compliant. Contact the host device
service provider for assistance with host software.
Caution If the CamCor meter is installed in a control system, place the control system in manual operating
mode before making changes to the CamCor meter conguration. Failure to do so may cause er-
ratic and undesired responses from valves or other devices controlled by the system.
Consult Table 1.1—Communication Specications below for CamCor Coriolis meter communication specications.
Table 1.1—Communication Specications
Specication Description
Communication System RS-485 Multidrop-compliant Master/Slave System
Full-duplex/Half-duplex Half-duplex
Baud Rate 9600, 19200, 38400 (shipped from Factory at 9600)
Slave Address 1
Data Bits 8
Parity Odd
Stop Bit 1 Bit
Flow Control None
Communication Timeout 200 ms
Transmission Length (Maximum) 0.75 miles (1.2 km) (depending on service environment)
Number of Devices on Each Node
(Maximum)
32
Optional Modbus Communication Baud Rate Setting
A CamCor meter purchased with the Modbus Communication option is shipped with the baud rate set to 9600. The baud
rate is adjustable using the SW3-1 and SW3-2 switches on the maintenance board (Figure 1.1, Page 6) located in the
transmitter body. (For more information about maintenance board access and switch locations, see the CamCor Hardware
Manual.) See Table 1.2—Baud Rate Switch Settings below to identify baud rate settings based on switch position:
Table 1.2—Baud Rate Switch Settings
Baud Rate SW3-1 Setting SW3-2 Setting
9600 Off Off
19200 On Off
38400 Off On
5
CamCor™Modbus Protocol Section 1

Baud Rate SW3-1 Setting SW3-2 Setting
Do Not Set On On
Figure 1.1—Maintenance board switch locations and on/off positions
Standard Modbus Function Codes
The Modbus functions supported by CamCor Coriolis meters are as follows:
Function Code Description
03 (03H) Read Holding Registers
16 (10H) Preset Multiple Registers
Exception Response
If the device receives an unsupported function code in a query message, the device responds with an exception message.
For example, if the query message contains Function Code “11,” an unrecognized code, the function code on the
response message will be changed to the unexpected value code and “0x80,” or “0x91” in this case (original Function
Code + 80). The data value contains the exception code 0x02.
Slave Addresses
Allowed Slave Addresses
Slave devices are shipped from the factory with a slave address of “1.” Typically, each slave device should be assigned a
unique slave address. Allowed slave addresses range from 1 to 255. Slave Address “0” broadcasts messages to all slave
devices and is only available for Function Code 16. If the broadcast message contains valid data, the device is updated
and no response is sent to the host system. For information about invalid message handling, see Exception Response.
6
Section 1 CamCor™Modbus Protocol

Resetting an Unknown Slave Address
If you do not know the slave address of a device to be connected to the CamCor meter, you can reset it using the follow-
ing procedure:
WARNING Do not use this query while more than one slave is connected. In a multipoint drop connection
setup, all connected slaves share the same address; therefore, resetting the slave address will
assign the same address to all slave devices.
1. Establish a point-to-point connection between the slave device and the CamCor meter.
2. Send the following information:
– Broadcast slave address 0 (0x00)
– Function Code 16 (0x10)
– Register 167 (0x00A7)
– Data value to be written (in this example, Slave Address 1 = 0x0001)
– Data validity check—CRC (0xB1FB)
The entire query string appears as follows:
0x001000A70001B1FB
Note The “0x” prex is used only with the rst 4-digit character string, and is dropped from the remaining character
strings. See Unsigned Short Integer, Page 9 for more information.
7
CamCor™Modbus Protocol Section 2

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8
Section 2 CamCor™Modbus Protocol

Section 2—Data Types
Data Formats
Various data types are implemented in the CamCor CT Series and PRO Series Coriolis meters. The following table lists
the formats and the numbers of bytes and registers associated with each type.
Table 2.1—CamCor Data Formats
Data Format Data Type Byte Count Register Count
16-bit Floating Point (FP) 4 2
Unsigned Short Integer (U8) 2 1
Unsigned Integer (U16) 2 1
Unsigned Long Integer (U32) 4 2
Packed ASCII Packed ASCII (PAC) See Packed ASCII below
The word ordering for multiple register data types, such as oating-point numbers or long integers, places the most sig-
nicant word rst in the message.
Unsigned Short Integer
The protocol for the CamCor Coriolis meters is based on a 16-bit data format. The value for “U8–Unsigned Short Inte-
ger” is appended with 0x00. For example, if the value stored on the device is 125 (0x7D), the Standard Modbus Function
Code 3 response is “0x007D.”
Packed ASCII
On CamCor meters, Packed ASCII uses three bytes to store four characters. For example, character string “ABCD” is
stored as “0x0420C4” in Packed ASCII.
Table 2.2—CamCor Packed ASCII Code
Data Format Data Appearance
Byte 0x04 0x20 0xC4
Bit 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 0 0
Character* A(1) B(2) C(3) D(4)
*The value inside parentheses is the Packed ASCII Code.
9
CamCor™Modbus Protocol Section 2

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10
Section 2 CamCor™Modbus Protocol

Section 3—CamCor Modbus Register Maps
Using CamCor Modbus Maps
Access Types
Each register has an access type as described in the table below:
Access Type Description
Read Only (RO) Register can only be read
Read/Write (RW) Register can be read and written
Note Some RW registers may return a “0” for the read function.
CamCor-Specic Modbus Protocol Constraints
Modbus protocol, as applied to CamCor Coriolis meters, has the following constraints:
• Maximum data length for any message (read or write) is 64 bytes (32 register counts)
• Maximum of 18 parameters can be updated/reset in 1 second
• Parameters with several register types (U32, PAC, FP) must be updated using a single Function Code 16 message
• A minimum 2.5 second wait time between sending Function Code 16 commands is required
Note Attempting to update individual register types separately will return a “normal” response, but will not update the
value displayed on the device.
Updating Intervals
CamCor meters are synchronized to update Modbus readings every 1080 ms. Sending a read query of less than 1080 ms
may result in stale data, since the reading will not be updated before the query is sent. Therefore, establish a read query
time of greater than 1080 ms to ensure updated information is returned.
Modbus Registers
Note Register numbers in the tables do not necessarily appear in consecutive numerical order. Non-consecutive num-
bers in the same table are denoted by a darkened line between the non-consecutive registers (decimal).
Device and System Information
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
Device Information
0–7 Reserved
Firmware Versions
174 00AE Main CPU Firmware Version U16 RO
175 00AF LCD Board Firmware Version
176 00B0 I/O Board Firmware Version
177 00B1 Maintenance Board Firmware Version
11
CamCor™Modbus Protocol Section 3

Alarm Status Information
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
128 0080 Output Saturation Alarm Status U8 0 = Off
1 = On
RO
129 0081 Sensor Failure Alarm Status
130 0082 Transmitter Failure Alarm Status
131 0083 Parameter Error Alarm Status
132 0084 Calibration Failure Alarm Status
133 0085 Slug Flow Alarm Status
134 0086 Transmitter Alarm Status
135 0087 Output Override Status
136 0088 Calibration in Progress
326 0146 Left Pickoff (LPO) Connect Status U8 0 = Not Found
1 = Found
RO
327 0147 Right Pickoff (RPO) Connect Status
328 0148 Resistance 1 Connection Status
329 0149 Resistance 2 Connection Status
330 014A Resistance 3 Connection Status
331 014B Sensor Connect Status
332 014C Maintenance Status U8 0 = Normal Operation
1 = Maintenace Mode
RO
333 014D Resistance Connection U8 0 = 2 wires (PRO Series)
1 = 3 wires (CT Series)
RO
334 014E Digital Signal Processing (DSP)
Parameter Error
U8 0 = Normal
1 = Error
RO
335 014F Internal Communication: Short Span
Error
U8 0 = Normal
1 = Communication Error
RO
336 0150 LPO Overow Status U8 0 = Normal
1 = Overow
RO
337 0151 RPO Overow Status
338 0152 CPU Reset Status U8 0 = More than 10 seconds
after reset
1 = Within 10 seconds of
reset
RO
339 0153 DSP Reset Status
340 0154 Internal Communication: Long Span
Error
U8 0 = Normal
1 = Communication Error
RO
341 0155 Internal Communication Overrun Error
342 Reserved
Communications Alarm Counter
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
181 00B5 Slave Address Mismatch Counter U16 RO
182 00B6 Undened Function Counter 0 U16 RO
183 00B7 Improper Usage of Broadcast Counter
184 00B8 Data Count Overow Counter
185–187 Reserved
JOHN: Should we specify Register 330
for CT Series only?
12
Section 3 CamCor™Modbus Protocol

Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
188 00BC CRC Mismatch Counter 0 U16 RO
189 00BD Invalid Data Write Counter
190 00BE Communication Timeout Counter
191 00BF Internal Communication Error Counter
192–196 Reserved
Device, Sensor and Slave Address Conguration
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
Device
80008 Device Identication Number U32 0 – 1677215 RW
10 000A Message PAC 24 bytes
(32 characters)
RW
22 0016 Tag Number PAC 6 bytes
(8 characters)
RW
25 0019 Description PAC 12 bytes
(16 characters)
RW
31 001F Day (DD) U8 1 – 31 RW
32 0020 Month (MM) U8 1 – 12 RW
33 0021 Year (YY) U8 00 – 99 RW
34 0022 Sensor Serial Number U32 0 – 1677215 RW
36 0024 Manufacture Number
Sensor
92 005C Flange Type see Table
4.2—
Flange
Types and
Sensor
Materials
U8 RO
93 005D Sensor Type <Character String> PAC 6 bytes
(8 characters)
RW
96 0060 Sensor Material see Table
4.2—
Flange
Types and
Sensor
Materials
U8 RW
127 007F Sensor Type U8 0x00 = CT Series
0x01 = Pro Series
RO
Slave Address
167 00A7 Slave Address 1U8 1 – 255 RW
13
CamCor™Modbus Protocol Section 3

Damping Time Conguration
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
62 003E Mass Flow Rate Damping Time (sec.) FP 0.0 – 200.0 RW
64 0040 Density Damping Time (sec.)
66 0042 Temperature Damping Time (sec.)
68 0044 Analog Output 1 Damping Time (sec.)
70 0046 Analog Output 2 Damping Time (sec.)
Output Conguration
Caution If the CamCor meter is installed in a control system, place the control system in manual operating
mode before making changes to the CamCor meter conguration. Failure to do so may cause er-
ratic and undesired responses from valves or other devices controlled by the system.
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
Analog Outputs
42 002A Analog Output 1 Conguration 4U8 0 = Mass Flow
1 = Temperature
3 = Density
4 = Volume Flow
6 = Drive Output
RW
43 002B Analog Output 2 Conguration 3
46 002E Analog Output Maximum Mass Flow
Rate
see Table
3.1—
Congured
Units, page
16, then
see Table
4.1—Units,
page 23
FP -9999999 to 9999999 RW
48 0030 Analog Output Minimum Mass Flow
Rate
RO
50 0032 Analog Output Maximum Volume Flow
Rate
RW
52 0034 Analog Output Minimum Volume Flow
Rate
RO
54 0036 Analog Output Maximum Density RW
56 0038 Analog Output Minimum Density RW
58 003A Analog Output Maximum Temperature RW
60 003C Analog Output Minimum Temperature RW
80 0050 Analog Output 1 Override Value Setting
(mA)
FP 2.40 – 21.60 RW
82 0052 Analog Output 2 Override Value Setting
(mA)
84 0054 Analog Output 1 Adjustment Value for 4
mA (Reading Value) (mA)
FP 2.40 – 5.60 RW
86 0056 Analog Output 2 Adjustment Value for 4
mA (Reading Value) (mA)
88 0058 Analog Output 1 Adjustment Value for
20 mA (Reading Value) (mA)
FP 18.40 – 21.60 RW
90 005A Analog Output 2 Adjustment Value for
20 mA (Reading Value) (mA)
159 009F Analog Output 1 Low Cutoff (%) FP 0.0 – 10.0% RW
161 00A1 Analog Output 2 Low Cutoff (%)
14
Section 3 CamCor™Modbus Protocol

Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
Pulse Outputs
203 00CB Pulse Operation Mode 0 U8 0 = Weight (Scaling)
1 = Frequency
RW
44 002C Pulse Output 1 Assignment 1U8 0 = Mass Flow
1 = Volume Flow
RW
45 002D Pulse Output 2 Assignment
104 0068 Pulse Output 1 Frequency Rate Factor
Unit
see Table
4.1—Units,
page 23
U8 RO
105 0069 Pulse Output 1 Frequency Factor (Hz) FP 0.10 – 10000.00 RW
107 006B Pulse Output 1 Flow Rate Factor see Table
4.1—Units,
page 23
FP RW
109 006D Volume Flow Rate Compensation
Coefcient
FP –999999 to 999999 RW
111 006F Pulse Output 2 Frequency Rate Factor
Unit
see Table
4.1—Units,
page 23
U8 RO
112 0070 Pulse Output 2 Frequency Factor (Hz) FP 0.10 – 10000.00 RW
114 0072 Pulse Output 2 Flow Rate Factor see Table
4.1—Units,
page 23
FP RW
116 0074 Pulse Output 1 Override Frequency
Setting (Hz)
10000 FP 0.1 – 11000.0 RW
118 0076 Pulse Output 1 Pulse Count 0 FP 0 – 99999999 RW
120 0078 Pulse Output 2 Override Frequency
Setting (Hz)
10000 FP 0.1 – 11000.0 RW
122 007A Pulse Output 2 Output Pulse Count 0 FP 0 – 99999999 RW
124 007C Flow 1 Total Control U8 1 = Start
2 = Stop
3 = Reset
RW
125 007D Flow 2 Total Control
126 007E Status Output Override U8 0 = N.C.
1 = N.O.
3 = Stop
RW
163 00A3 Pulse Output 1 Low Cutoff (%) FP 0.0 – 10.0%
165 00A5 Pulse Output 2 Low Cutoff (%)
197 00C5 Pulse Output 1 Scaling Factor Unit see Table
3.1—
Congured
Units, page
16, then
see Table
4.1—Units,
page 23
U8 RO
198 00C6 Pulse Output 1 Scaling Factor FP RW
200 00C8 Pulse Output 2 Scaling Factor Unit U8 RO
201 00C9 Pulse Output 2 Scaling Factor FP RW
343 0157 Double Pulse Mode Option* 0 U8 0 = Off
1 = Double Pulse with 90°
2 = Double Pulse with -90°
3 = Double Pulse with 180°
RW
* When the Double Pulse Mode (Decimal Register 343) is enabled [in any mode other than “0 (Off)”], the Pulse Output 2 Setting
(Decimal Register 45) cannot be changed. To change the Pulse Output 2 Setting, you must change the Double Pulse Mode to “0
(Off)” and then change the Pulse Output 2 Setting.
15
CamCor™Modbus Protocol Section 3

Table 3.1—Congured Units
Register
(Decimal)
Register
(Hex) Description Units
Data
Type Data Range Access
38 0026 Mass Flow Rate Unit see Table
4.1—Units,
page 23
U8 RW
39 0027 Volume Flow Rate Unit
40 0028 Density Unit
41 0029 Temperature Unit
Density Conguration
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
154 009A Density Override Setting U8 0 = Disable
1 = Enable
RW
155 009B Density Override Value (g/ml) FP 0.0000 – 5.0000 RW
168 00A8 Density Compensation 0U8 0 = Disable
1 = Enable
RW
169 00A9 Base Temperature (°C) FP –999.99 to 999.99 RW
171 00AB ExpASMEon Factor 0.00024 FP –999999 to 999999 RW
Alarm/Status Conguration
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
137 0089 Analog Output Error Setting 1U8 0 = Upscale
1 = Downscale
2 = Hold
3 = Zero (4 mA)
RW
138 008A Pulse Output Error Setting 3 U8 0 = Upscale
2 = Hold
3 = Zero (0 Hz)
RW
139 008B High/Low Alarm Check Setting 0 U8 0 = High Alarm Check
1 = Low Alarm Check
2 = High and Low
Alarm Check
RW
140 008C High/Low Alarm Unit see Table
4.1—Units,
page 23
U8 RO
141 008D High Alarm Set Point FP –999999 to 999999 RW
143 008F Low Alarm Set Point
145 0091 High/Low Alarm Deadband
147 0093 Status Input Function Setting 250 U8 0 = 0% Signal Lock
1 = Auto Zero Adjust
2 = Reset All Flow
Totals
3 = Reset Flow Total 1
4 = Reset Flow Total 2
250 = No Function
RW
148 0094 Status Output Function Setting 250 U8 0 = Error Status
1 = Bidirectional
2 = High/Low Alarm
Setting
3 = Drive Out Alarm
250 = No Function
RW
16
Section 3 CamCor™Modbus Protocol

Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
149 0095 High/Low Alarm Source 0 U8 0 = Mass Flow
1 = Volume Flow
2 = Density
3 = Temperature
232 = Net Total 1
231 = Net Total 2
RW
150 0096 Status Input Active Level Setting 0 U8 0 = Closed Active
1 = Open Active
RW
151 0097 Status Output Active Level Setting
152 0098 Slug Flow Detection Delay (sec.) 0 FP 0 – 60 RW
Flow Conguration
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
97 0061 Flow Direction 0U8 0 = Positive
1 = Reverse
RW
98 0062 Maximum Density (Slug Flow) (g/ml) FP 0.000 – 10.000 RW
100 0064 Minimum Density (Slug Flow) (g/ml)
102 0066 Flow Rate Low Cutoff (%) FP 0.000 – 5.000 RW
Maintenance Conguration
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
206 00CE Maintenance Mode Disabled U8 RW
207 00CF Maintenance Mass Flow Rate Unit U8 RO
208 00D0 Maintenance Mass Flow Rate FP -9999999 to 9999999 RW
210 00D2 Maintenance Density see Table
3.1—
Congured
Units, page
16, then
see Table
4.1—Units,
page 23
FP -9999999 to 9999999 RW
212 00D4 Maintenance Inner Temperature
214 00D6 Maintenance Outer Temperature
216 00D8 Maintenance Volume Flow Rate Unit U8 RO
217 00D9 Maintenance Volume Flow Rate FP -9999999 to 9999999 RW
344 0158 Drive Output Threshold (%) U32 0.0 to 100.0 RW
Security Conguration
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
173 00AD Front Panel Control Lock Setting 0 U8 0 = Unlock
1 = Lock
RW
226 00E2 Write Protect Conguration 0 U8 0 = Disable
1 = Enable
RO
17
CamCor™Modbus Protocol Section 3

Calibration and Testing
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
157 009D Zero Offset 0 FP – 999999 to 999999 RW
178 00B2 Trigger Self Diagnosis U8 0 = Self Diag. Mode 1
1 = Self Diag. Mode 2
2 = Self Diag. Mode 3
3 = Self Diag. Mode 4
4 = Self Diag. Mode 5
RW
179 00B3 LCD Test U8 1 = Backlight Test
2 = LED Test
3 = LCD Test
RW
180 00B4 Trigger Auto Zero Offset U8 Any data will start auto
zero offset
RW
204 00CC Trigger for High-Density Calibration U32 RW
Holding Registers
Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
227 00E3 Mass Flow Rate Unit see Table
4.1—Units,
page 23
U8 RO
228 00E4 Mass Flow Rate Reading FP
230 00E6 Volume Flow Rate Unit U8
231 00E7 Volume Flow Rate Reading FP
233 00E9 Density Unit U8
234 00EA Density Reading FP
236 00EC Internal Temperature Unit U8
237 00ED Internal Temperature Reading FP
239 00EF Output Saturation Alarm see Table
3.2—
Transmitter
Status Data,
page 20
U8 RO
240 00F0 Sensor Failure Alarm
241 00F1 Transmitter Failure Alarm
242 00F2 Parameter Error Alarm
243 00F3 Calibration Failure Alarm
244 00F4 Slug Flow Alarm
245 00F5 Transmitter Alarm
246 00F6 Output Override Status
247 00F7 Calibration in Progress
248 00F8 High/Low Alarm
249 00F9 Maintenance in Progress
250 00FA Transmitter Operation
251–255 Reserved
256 0100 Analog Output 1 Output (%) FP RO
258 0102 Analog Output 2 Output (%)
260 0104 Status Input Status U8 RO
261-267 Reserved
18
Section 3 CamCor™Modbus Protocol

Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
269 010D Positive Flow Total 1 see Table
3.1—
Congured
Units, page
16, then
see Table
4.1—Units,
page 23
FP 0 – 99999999 RO
271 010F Positive Flow Total 2
273 0111 Reverse Flow Total 1
275 0113 Reverse Flow Total 2
277 0115 Net Flow Total 1 (Positive - Reverse) FP ± 99999999 RO
279 0117 Net Flow Total 2 (Positive - Reverse)
281 0119 Net Flow Rate 1 Unit see Table
4.1—Units,
page 23
U8 RO
282 011A Net Flow Rate 1 FP ± 99999999
284 011C Net Flow Rate 2 Unit U8
285 011D Net Flow Rate 2 FP ± 99999999
287 011F Self-Diagnosis Result: DSP Voltage U8 RO
288 0120 Self-Diagnosis Result: Input Frequency U8 RO
289 0121 Self-Diagnosis Result: Input Phase
Difference
U8 0 = OK
1 = Fail
RO
290 0122 Self-Diagnosis Result: Input Amplitude U8 RO
291 0123 Self-Diagnosis Result: Input Temperature U8 RO
292 0124 Self-Diagnosis Result: Resistance Value U8 RO
293 0125 Self-Diagnosis Result: Static Installation
Test
U8 0 = Best
1 = Good
2 = Fair
3 = Poor
RO
294 0126 Self-Diagnosis Result: Dynamic Installation
Test
U8 0 = Stable Flow
1 = Fairly Stable Flow
2 = Unstable Flow
RO
295 Reserved
296 0128 DSP Maintenance Remaining Time U8 30 to 0 countdown RO
297 0129 LCD Test Mode U8 0 = Off
1 = Backlight
2 = LED
3 = LCD
RO
298 Reserved
299 012B LPO Amplitude Unit see Table
4.1—Units,
page 23
U8 RO
300 012C LPO Amplitude Reading FP
302 012E RPO Amplitude Unit U8
303 012F RPO Amplitude Reading FP
305 0131 Drive Frequency Unit U8
306 0132 Drive Frequency (Hz) FP
308 0134 Drive Phase Unit U8
309 0135 Drive Phase (urad) FP
311 0137 Drive Output Unit U8
312 0138 Drive Output (V) FP
314 013A Phase Difference Unit U8
315 013B Phase Difference (urad) FP
317 013D Inner Temperature Unit U16
19
CamCor™Modbus Protocol Section 3

Register
(Decimal)
Register
(Hex) Description Default
Data
Type Data Range Access
318 013E Inner Temperature see Table
4.1—Units,
page 23
FP RO
320 0140 Outer Temperature Unit U16
321 0141 Outer Temperature FP
323 0143 Temperature Difference Unit U16
324 0144 Temperature Difference FP
Table 3.2—Transmitter Status Data
EEnabled when Bit Value = 1
Register Transmitter Status Bit Position Status Description
239 Output Saturation Alarm 0 Analog Output 1 Saturated
1Analog Output 2 Saturated
2 Pulse Output 1 Saturated
3 Pulse Output 2 Saturated
4–7 Reserved
240 Sensor Failure Alarm 0 Drive Input Out of Range
1Scale Over
2 Temperature Out of Range
3 Density Outside Limits
4 P.O Signal Error
5 Temp Connect Error
6 P.O Connect Error
7Reserved
241 Transmitter Failure Alarm 0 EEPROM Checksum Error
1Data Update Error
2 Transmitter Interface Failure 0
3 Transmitter Interface Failure 1
4 Transmitter Interface Failure 2
5 Transmitter Interface Failure 3
6 Transmitter Interface Failure 4
7 Reserved
242 Parameter Error Alarm 0 Analog 1 Set Alarm
1Analog 2 Set Alarm
2 H/L Alarm Point Set Alarm
3–7 Reserved
243 Calibration Failure Alarm 0 Auto Zero Failed
1Stability Check Failed
2–7 Reserved
244 Slug Flow Alarm 0 Slug Flow
1–7 Reserved
20
Section 3 CamCor™Modbus Protocol