Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Uživatelský manuál stáhnout pdf (Strana 55)

4–15Configuring the Module

Publication 1771ĆUM127B-EN-P - December 2002

RTD Type

This field lets you select the type of sensor connected to a 650 ohm

input channel. This field must be 0 for all other channel types.

Sensor Type Binary Value

Decimal 10 09 08

Octal 12 11 10

Resistance 0 0 0

100 Ohm Pt. European Std. 0 0 1

100 Ohm Pt. U.S. Std. 0 1 0

10 Ohm Copper 0 1 1

120 Ohm Nickel 1 0 0

10 Ohm Offset

This field lets you compensate for a small offset error in a 10 ohm

copper RTD. Values can range from -0.99 to +0.99 ohms in units of

0.01 ohms.

For example, if the resistance of a copper RTD used with this

channel was 9.74 ohms at 25

C, you would enter -0.26 in this field.

The configuration block for a block transfer write consists of:

• module configuration header

• output channel data (if applicable)

• output channel programming (if applicable)

• input channel programming (if applicable)

Block Transfer Write Configuration Data Header

The configuration data header consists of information required for

the processor to properly identify the type of information it will be

receiving.

Module Configuration Data Header

Word/Dec. Bit

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Word/Octal Bit

17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

BTW word type Constant Number of outputs Constant

1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0

Configuration Block for a

Block Transfer Write

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 187 188

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Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Uživatelský manuál Strana 55