Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Manual de usuario descargar pdf (Pagina 127)

Block Transfer Write and Block Transfer Read Configurations for 1 Output/7 Input 1771-N Series Modules F–5

Publication 1771ĆUM127B-EN-P - December 2002

Definition

Decimal Bit

(Octal Bit)

Word

Word 15 Bits 00-07

Alarm deadband. This field creates a hysteresis effect on the

low and high alarms. For an alarm condition to be removed,

the input signal must go above the low alarm limit or below the

high alarm limit by an amount equal to the specified deadband.

Alarm deadband values must be less than or equal to one half

the difference of the high and low alarm values.

Bits 08-15

(10-17)

Filter time constant. Specifies the time constant of a digital, first

order lag filter on the input in 0.1 second units. Legal values

are 0.1 to 9.9 seconds. A value of 0 disables the filter.

Bits 00-07

10 ohm offset. Compensates for a resistance offset on a 10

ohm copper RTD. Range of +

0.99 ohms, in units of 0.01 ohms.

This field must be 0 for all other RTDs.

Bits 08-10

(10-12)

RTD type. Specifies type of RTD linearization on RTD

channels: 001 = 100 ohm Pt, European standard;

010 = 100 ohm Pt. US standard;

011 = 10 ohm copper;

100 = 120 ohm nickel.

This field is 0 for non-RTD channels.

Word 16

Bit 11 (13)

Constant = 0

Bits 12-15

(14-17)

Thermocouple type. Specifies type of TC linearization on TC

channels. 0000 = millivolts;

0001 = B;

0010 = E;

0011 = J;

0100 = K;

0101 = R;

0110 = S;

0111=T.

This field must be 0 for non-thermocouple channels.

Words 17 thru 23 Same as words 10 thru 16 but for channel 3.

Words 24 thru 30 Same as words 10 thru 16 but for channel 4.

Words 31 thru 37 Same as words 10 thru 16 but for channel 5.

Words 38 thru 44 Same as words 10 thru 16 but for channel 6.

Words 45 thru 51 Same as words 10 thru 16 but for channel 7.

Words 52 thru 58 Same as words 10 thru 16 but for channel 8.

1 2 ... 122 123 124 125 126 127 128 129 130 131 132 ... 187 188

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