Hardy HI 6600 Series Modular Sensor System - Manual (Page 114)

HI 6600 Series Modular Sensor System User Guide
Page | 114
OUTPUT Table Description
Portion of the OUTPUT table used for the Hardy Gateway Module (HGM)
The first four variables in the output table, Command, Aux Command Information, Parameter ID, and Parameter
Value, are used to send commands either the Hardy Gateway Module (HGM) or to a specific Weight Processing Module,
to write new parameter values, read existing parameter values, or read data values such as COUNT, or ROC, etc.
The Command is a 32 bit value, with the top 8 bits indicating the channel (WPM) number, the next 8 bits are reserved,
and the bottom 16 bits are used for the command string as shown below.
Bits [31] to[24]
Bits [23] to [16]
Bits [15] to[0]
Channel Number Reserved Command
The 32-bit Aux Command Information is used for specific information required for special commands.
To select which parameter is being read or written set the predefined number into the Parameter ID; if the value is being
read then the Parameter Value is ignored, or set to the required value if the value is being written.
Portion of the OUTPUT table used for Weigh Processing Modules (WPMs)
The remaining bytes in the output table are in multiples of 16 bytes, representing 4 variables, for each WPM in the
HI6600 system.
The first variable Module Reference x is used to select which WPM, (where x = 0 to N) the output table section is
targeting, the next two values Mx Reserved 1 and Mx Reserved 2 are used as padding so the user selectable read only
parameters are aligned between the output and input tables.
The next value Mx Parameter ID is a user selectable parameter ID values which can be used to return read only values
from the selected WPM. These read only values can be anything from an WPM specific measurement such as COUNT to
a parameter value such as WAVERSAVER.
INPUT Table Description
Portion of the INPUT table used for the Hardy Gateway Module (HGM)
The first four variables in the input table, Command Echo, Command & Gateway Status, Parameter ID,
and Parameter Value, closely match the first four variables in the output table.
The Command Echo is used to echo the command from the output table, to enable the PAC or PLC to ensure
that the correct command has been executed; and also that command has been completed and the command
status value is valid.
The response of the HGM or WPM to the generic command value or the read only parameter command value
is provided in the Command and Gateway Status value. The bottom 16 bits are used for the Command
status, and verifies if the command was executed with the expected result; and the top 16 bits are used for the
Gateway Status.
Command Status Definition
Bits[31:30] 2 bit Input table count
Bits[29:126] 14 bit Gateway status information
Bits[15:0] Status of Command