Pulse Accumulator; Wiring Details For Pulse Accumulator Inputs; Configuration - GE Mark VIeS System Manual

7.11 Pulse Accumulator

The YUAA support simple Pulse Accumulator inputs, which can count pulse edges on an input channel across a specified
threshold voltage (user declares the threshold voltage with the PAThreshold parameter), up to a limited frequency. (Refer to
the product specifications.) The connected device can be a dedicated externally-powered device that provides pulse inputs, or
it can be an external power supply and contact, similar to the configuration supported for
The YUAA firmware counts the pulse detected in an unsigned 16-bit integer and delivers it to the controller as a REAL input.
This REAL input will only ever contain an integer value (0-65535). When the counter value reaches 65535, the next pulse
seen will cause it to change to 0. In order to detect this rollover and accumulate counts beyond this, the user must write
application blockware to keep track of the total accumulation separately. Refer to the section
Example for an example of a simple way to do this.
The user can also use additional application blockware to determine the rate of the input. Refer to the example in the section
Frequency Calculation Example.

7.12 Configuration

The ToolboxST configuration for YUAA is different than most I/O packs. Since each point can process different types of I/O,
there is a Mode selection in the Configuration tab that has to be set in the ToolboxST application Component Editor for
each IOPoint (or left Unused if not used). The ToolboxST application does not enforce any limitations for available mA
outputs with respect to the potential ambient environment inside the cabinet.
7.12.1 Parameters
The following are global configuration options for the YUAA.
Name
TempUnits
ColdJuncType
AMS_Msgs_Only
AMS_Mux_Scans_Permitted
Min_MA_Hart_Output
200 GEH-6855_Vol_II

Wiring Details for Pulse Accumulator Inputs

Value
Description
{ } = default
°C
Temperature unit selection is use for RTDs, Thermocouples, and Cold Junction values
{°F}
{Local}
Cold Junction source for thermocouple inputs
Remote
{Disable}
AMS Messages only - do not send control messages if enabled.
Enable
{Disable}
AMS mulitplexer scans for command 1 and 2 are allowed (command 3 always allowed)
Enable
{4.0}
Minimum MA output for a Hart Enabled Device
0 to 22.5
GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
Public Information
externally-wetted contact inputs.
Pulse Accumulator Buffer