RAM 6000 Technical Information PDF herunterladen (Seite 164)

Software Manual 164

Automation Tab

Counter: This option will be available when Input Mode supports counters. When the checkbox is checked, the coun-

ter mode is enabled. The Count Value Size, Counter Mode and CNT Starting Address become available and must be

configured as well. The counter value is stored in the CNT IODB address.

Count Value Size: This is a plain counter mode that is either 16 or 32-bits in size, which counts on positive edge or neg-

ative edge depending on the polarity bit.

16-bit Count Returned: When this option is selected, the count will increment in a single register from 0 to 65535, then roll

over to 1 and continue to count upward again.

32-bit Count Returned: Select this option to use two (2) consecutive 16-bit registers as one 32-bit register. When the first reg-

ister rolls over to 1, the second register begins counting at 65536 (second register is most significant) and continues counting

upward in 32-bit mode.

Note: Two (2) consecutive registers are always allocated in the “CNT IODB/Modbus Address” column whether set for 16-bit or 32-

bit mode. Therefore, when using 16-bit Count Returned option, the second register should be ignored.

Counter Mode: When this option is selected, the counter mode must also be selected. If the 16-bit Counter Returned

is selected, the analog input register increases from 0 to 32767, then -32768 to 0. If the 32-bit Count Returned is

selected, the long integer input register increases from 0 to 4.2949673E9, then -4.2949673E9 and back to 0. The menu

selections for this options are listed below:

Note: When the Input Mode is set to Slow Response (filtered) some of the Counter Mode options are not particularly suited since

the maximum count is 10Hz. For example, Frequency Rate 0.1s would only be capable of measuring one count.

Up: Upward accumulator of input pulses

Run time sec: This is the on-time timer feature that counts the time the associated input is in the ON state. The output for

this option is in seconds.

Run time min: This is the on-time timer feature that counts the time the associated input is in the ON state. The output of this

option is minutes.

Freq. Rate: Depending on the frequency rate selected, the pulses are accumulated for 100ms, 200ms, 500ms, 1 second, 2

seconds, 5 seconds, 10 seconds, 30 seconds, 60 seconds or 60 minutes.

ON Pulse Width: Width time is ms between consecutive leading (OFF to ON) and trailing (ON to OFF) edges.

OFF Pulse Width: Width time is ms between consecutive leading (ON to OFF) and trailing (OFF to ON) edges.

• Pulses longer than the maximum size allowed by the register will result in an overflow condition (full scale 16-bit

value equal to 65535)

• Pulses shorter than 1ms will not be accurately detected resulting in erroneous values.

• If no edge is ever detected by an input, the result will read as $0000. Timing only begins when an edge is detected.

Note: Counters are volatile (they will forget their counts if power is lost). Typically, retention of the values and resetting the counts

is accomplished in software at the host computer that polls these inputs.

CNT Modbus Address: Configuration must be sequential, CNT addresses are sequential by two registers from the base

address.

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RAM 6000 Technical Information Seite 164