Operating instructions

PTQ-MCM ♦ Quantum / Unity Platform Modifying the Configuration File
Modbus Communication Module
Page 64 of 139 ProSoft Technology, Inc.
April 29, 2008
Read Register Count
Range 0 to 3999
This parameter specifies the number of registers to be transferred from the
module to the processor. Valid entry for this parameter is 0 to 3999.
Write Register Start
Range 0 to 3999
This parameter specifies the starting register in the module where data will be
transferred from the module to the processor. Valid range for this parameter is 0
to 3999.
Write Register Count
Range 0 to 3999
This parameter specifies the number of registers to be transferred from the
module to the processor. Valid entry for this parameter is 0 to 3999
3x Register Start
1 to n
This parameter sets the first register in the processor where the data transferred
from the module to the processor will be placed.
4x Register Start
1 to n
This parameter sets the first register in the processor where the data transferred
from the processor to the module is present.
Initialize Output Data
Yes or No
This parameter determines if the output data for the module should be initialized
with values from the processor. If the value is set to 0, the output data will be
initialized to 0. If the value is set to 1, the data will be initialized with data from the
processor. Use of this option requires associated ladder logic to pass the data
from the processor to the module.
Failure Flag Count
0 through 65535
This parameter specifies the number of successive transfer errors that must
occur before the communication ports are shut down. If the parameter is set to 0,
the communication ports will continue to operate under all conditions. If the value
is set larger than 0 (1 to 65535), communications will cease if the specified
number of failures occur.