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Float flag, Float start, Float offset – ProSoft Technology 5201-MNET-ASCII User Manual

Page 23: Arp timeout, Command error delay

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MNET ♦ ProLinx Gateway

Modbus TCP/IP Protocol Configuration

Modbus TCP/IP Interface Module

Driver Manual

ProSoft Technology, Inc.

Page 23 of 78

September 1, 2010

2.4.4 Float Flag

Yes or No

This flag specifies if the floating-point data access functionality is to be
implemented. If the float flag is set to Yes, Modbus functions 3, 6, and 16 will
interpret floating-point values for registers as specified by the two following
parameters.

2.4.5 Float Start

0 to 32767

This parameter defines the first register of floating-point data. All requests with
register values greater-than or equal to this value will be considered floating-point
data requests. This parameter is only used if the Float Flag is enabled. For
example, if a value of 7000 is entered, all requests for registers 7000 and above
will be considered as floating-point data.

2.4.6 Float Offset

0

TO

3998

This parameter defines the starting register for floating-point data in the internal
gateway database. This parameter is used only if the Float Flag is set to Y

ES

.

For example, if the Float Offset value is set to 3000 and the Float Start parameter
is set to 7000, the data returned as floating-point data for register 47001 (or
407001) will actually come from internal gateway registers 3000 and 3001. If the
requested address was 47002 (407002), the data will be returned from internal
registers 3002 and 3003. If the requested address was 47101 (407101), the data
will be returned from internal registers 3200 and 3201; and so on.

2.4.7 ARP Timeout

1 to 60

This parameter specifies the number of seconds to wait for an ARP reply after a
request is issued.

2.4.8 Command Error Delay

0 to 300

This parameter specifies the number of 100 millisecond intervals to turn off a
command in the error list after an error is recognized for the command. If this
parameter is set to 0, there will be no delay.