12

“1” = Open RTD or TC, causes Process Temp. Value to be 32002, disables alarms, causes no LED indication.

COIL ADDRESS

COIL NAME

ACCESS

COMMENTS

1

Baud B0

Read/Write

See Communication Register and Coils Table.

2

Baud B1

Read/Write

See Communication Register and Coils Table.

3

Baud B2

Read/Write

See Communication Register and Coils Table.

4

Parity B3

Read/Write

See Communication Register and Coils Table.

5

Parity B4

Read/Write

See Communication Register and Coils Table.

6

Data Bits B5

Read/Write

See Communication Register and Coils Table.

7

Mode B6

Read/Write

See Communication Register and Coils Table.

8

Change B7

Read/Write

“1” = Change ITMS communications to above settings.

9

P. Checksum Error

Read/Write

“1” = Parameter checksum error, disables alarms, causes flashing LEDs.

10

C. Checksum Error

Read/Write

“1” = Calibration checksum error, disables alarms, causes flashing LEDs.

11

AL 1 Over Range

Read Only

“1” = Alarm 1 Threshold over range, disables alarms, causes no LED indication.

12

AL 2 Over Range

Read Only

13

Open Input

14

Over Range

“1” = Alarm 2 Threshold over range, disables alarms, causes no LED indication.

Read Only

“1” = Over Range, causes Process Temp. Value to be 32001, disables alarms, causes no LED indication.

Read Only

15

Under Range

Read Only

“1” = Under Range, causes Process Temp. Value to be -32001, disables alarms, causes no LED indication.

16

Shorted RTD

Read Only

“1” = Shorted RTD, causes Process Temp. Value to be -32002, disables alarms, causes no LED indication.

REGISTER TABLE

The below limits are shown as Integers or HEX < > values. Read and write functions can be performed in either Integers or HEX as long as the conversion was

done correctly. Negative numbers are represented by two’s complement.

COILS TABLE (COMMUNICATION AND ERRORS)

* For Input Registers, replace the 4xxxx with a 3xxxx in the above register address. The 3xxxx are a mirror of the 4xxxx Holding Registers.

Coils 1-7 mirror register 40026 and Coils 9-16 mirror register 40025.

REGISTER

ADDRESS *

REGISTER NAME

LOW LIMIT

ACCESS

COMMENTS

40007

CJ Temp

-32000

32000

40001

ADC reading

N/A

N/A

Read Only

ADC (Analog to Digital Converter) reading of present input level.

Read/Write

Cold Junction calibration temp (1 = 0.01°C).

40009

High Resolution

40002

Process Temperature Value

N/A

N/A

Read Only

Process Value (with scale and offset) of present input level.

0

1

Read/Write

0 = 1 degree, 1 = 0.1 degree.

40003

Floating Point LO

N/A

N/A

Read Only

IEEE Standard 754 Floating Decimal Point, low order of Temperature Value.

(Allows 32 bit accuracy for external monitoring.)

40013

User Input Action

<0000>

<0015>

40004

Floating Point HI

N/A

N/A

Read Only

IEEE Standard 754 Floating Decimal Point, high order of Temperature Value.

(Allows 32 bit accuracy for external monitoring.)

Read/Write

See User Input Action Register Table.

40022

Sensor Failure Action

40005

User Input Pin State

N/A

N/A

Read Only

0 = Active, 1 = Inactive.

0

3

Read/Write

See Sensor Failure Action For Alarm State Table.

40006

Temperature Scale

0

1

Read/Write

0 = °F, 1= °C.

40008

Input Type

0

13

Read/Write

See Input Type Register Table.

40010

Filter Band

0

32000

Read/Write

See Filter Band explanation.

40011

Filter Response Time

0

1000

Read/Write

See Filter Response Time explanation (1 = 0.1 second).

40012

Offset Value

-32000

32000

Read/Write

See Offset explanation.

40014

Alarm 2 Action

<0000>

<0038>

Read/Write

See Alarm 1 & 2 Action Register Table.

40015

Setpoint 2 Value

-32000

32000

Read/Write

Alarm 2 setpoint value based on Process Value.

40016

Alarm 2 Hysteresis

1

32000

Read/Write

Alarm 2 hysteresis value based on Process Value.

40017

Alarm 2 Delay

0

32000

Read/Write

Alarm 2 delay trip on time (1 = 1 second).

40018

Alarm 1 Action

<0000>

<0034>

Read/Write

See Alarm 1 & 2 Action Register Table.

40019

Setpoint 1 Value

-32000

32000

Read/Write

Alarm 1 setpoint value based on Process Value.

40020

Alarm 1 Hysteresis

1

32000

Read/Write

Alarm 1 hysteresis value based on Process Value.

40021

Alarm 1 Delay

0

32000

Read/Write

Alarm 1 delay trip on time (1 = 1 second).

40023

Transmit Delay

1

255

Read/Write

Delay before serial transmission (1 = 1 msec). See Transmit Delay Explanation.

40024

Node (Unit) Address

1

247

Read/Write

Node serial ITMS address.

40025

Error Coils

<0000>

<0003>

Read/Write

Mirror of Coils 9-16. See Coil Table.

40026

Comm. Coils

<0020>

<00FF>

Read/Write

Mirror of Coils 1-8. See Coil Table and Communications Table.

40027

Alarm 1 State

0

1

Read/Write

Alarm 1 state (1 = on).

40028

Alarm 2 State

0

1

Read/Write

Alarm 2 state (1 = on).

40029

Factory Calibration

<0000>

<7777>

Read/Write

See MODBUS Calibration explanation.

41001- 41010 Slave ID

See FC17. See FC17.

Read Only

ITMS-4037, 0100 (ver. 1.00), 16 reads, 16 writes, 16 scratch. The version value

could be higher.

41101- 41116 GUID/Scratch

<0000>

<FFFF>

Read/Write

This area is for the user to store any related information.

This register area does not affect ITMS operations.