TM3AI8 / TM3AI8G

Introduction

The TM3AI8 (screw terminal block) / TM3AI8G (spring terminal block) expansion module feature 8 analog input channels with 12-bit resolution.

The channel input types are:

0...10 V
-10...+10 V
0...20 mA
4...20 mA
0...20 mA extended
4...20 mA extended

For information on the diagnostic codes produced by each input type, refer to Analog I/0 Modules Diagnostics.

For further hardware information, refer to TM3AI8 / TM3AI8G.

NOTE:

If you have physically wired the analog channel for a voltage signal and you configure the channel for a current signal in EcoStruxure Machine Expert, you may damage the analog circuit.

NOTICE
	INOPERABLE EQUIPMENT Verify that the physical wiring of the analog circuit is compatible with the software configuration for the analog channel. Failure to follow these instructions can result in equipment damage.

Configuring the Module

For each input, you can define:

Parameter		Value	Default Value	Description
Type		Not used, 0 - 10 V, -10 - +10 V, 0 - 20 mA, 4 - 20 mA, 0 - 20 mA extended, 4 - 20 mA extended.	Not used	Choose the mode of the channel.
Min.	0 - 10 V	-32768...32767¹	0	Specifies the lower measurement limit.
	-10 - +10 V		-10000
	0 - 20 mA		0
	4 - 20 mA		4000
	0 - 20 mA extended²		0	Not editable.
	4 - 20 mA extended²		1200	Not editable.
Max.	0 - 10 V	-32768...32767¹	10000	Specifies the upper measurement limit.
	-10 - +10 V		10000
	0 - 20 mA		20000
	4 - 20 mA		20000
	0 - 20 mA extended²		23540	Not editable.
	4 - 20 mA extended²		23170	Not editable.
Input Filter		0...1000	0	Specifies the first order filter time constant (0...10 s) in increments of 10 ms.
Sampling		1ms/Channel 10ms/Channel	1ms/Channel	Specifies the sampling period of the channel. If an input filter is active, sampling is set internally to 1 ms.
Status Enabled		Yes No	Yes	Enables the diagnostic byte of each channel. If the status is disabled (value = No), the status bytes `IBStatusIWx` do not contain relevant information.

¹ The 12-bit data (0 to 4095) processed in the analog I/O module can be linear-converted to a value between -32768 and 32767.

² The extended ranges are supported by modules from product version (PV) 03, firmware version (SV) 1.4.

I/O Mapping Tab

Variables can be defined and named in the I/O Mapping tab. Additional information such as topological addressing is also provided in this tab.

This table describes the I/O Mapping tab:

Variable	Channel	Type	Description
Inputs	IW0	INT	Current value of the input 0
	IW1	INT	Current value of the input 1
	IW2	INT	Current value of the input 2
	IW3	INT	Current value of the input 3
	IW4	INT	Current value of the input 4
	IW5	INT	Current value of the input 5
	IW6	INT	Current value of the input 6
	IW7	INT	Current value of the input 7
Diagnostic	IBStatusIW0	BYTE	Status of input 0
	IBStatusIW1	BYTE	Status of input 1
	IBStatusIW2	BYTE	Status of input 2
	IBStatusIW3	BYTE	Status of input 3
	IBStatusIW4	BYTE	Status of input 4
	IBStatusIW5	BYTE	Status of input 5
	IBStatusIW6	BYTE	Status of input 6
	IBStatusIW7	BYTE	Status of input 7

For further generic descriptions, refer to I/O Mapping Tab Description.