Rockwell-automation 1771-IFE ANALOG INPUT MODULE Instrukcja Użytkownika Pobierz pdf (Strona 49)

6–4 Calibrating Your Module

 !   

The BTR echoes back the status of each of the channels to verify

calibration. If selected channels were calibrated satisfactorily, the

BTR will reflect this by having their bits set to 1. (In Differential

mode, the upper byte of word 21 in the BTR is not set (bits 8–15

decimal or 10–17 octal are 0).)

Read Block Transfer Word 21

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

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

                

                 

4. Proceed to Gain Calibration below.

Gain Calibration

Calibrating gain requires that you apply 5.000V, 10.000V or 20mA

(as determined by your range and mode) (Table 6.A) across each

input channel.

1. Apply power to the module.

2. Apply the gain voltage as shown in Table 6.A to all 16 channels

(single-ended) or 8 channels (differential).

3. After the connections stabilize, request the gain calibration by

sending a 39 word block transfer write (BTW) to the module.

Refer to chapter 4.

When the BTW is sent, all selected channels are calibrated (set to

1) shown in Table 6.A. If a channel is not selected for

calibration, its bit is 0. (In Differential mode, the upper byte of

word 39 is not set (bits 8–15 decimal or 10–17 octal are 0).) All

bits in word 38 will be set to 0.

Write Block Transfer Word 39 for Gain Calibration

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

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

 

            



 

               

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Rockwell-automation 1771-IFE ANALOG INPUT MODULE Instrukcja Użytkownika Strona 49