Response delay time
(ms)
This setting determines how long (ms) the Gateway waits before
responding to a Modbus request. This setting is only required for
Modbus RTU.
Unmapped register
read response?
This is the value returned by the Gateway if the Modbus master
requests a register with no data assigned to it (empty register). It
is recommended this be set to zero fill to prevent errors.
Floating point
representation
This setting determines if the Gateway uses floating point values
or integer values. There are three options for this setting.
•
Float–uses 32 bit floating point values
•
Round–rounds the data value to the nearest whole number
•
Scaled–uses scaled integers to offset negative values or
increase decimal point resolution. The equation for scaled
integers is:
y = Ax - (B - 32768)
Where:
y = Scaled integer returned by the Gateway
A = Gain for scaled integer value
x = Measured value from wireless field device
B = Offset for scaled integer value
Use swapped
floating point
format?
This setting switches which register is sent first for a floating
point value. This setting is only used for floating point values.
Incorporate value’s
associated status as
error?
This setting causes the Gateway to report a predetermined value
when a communications or critical diagnostic error is received
from the wireless field device. The value is user configurable
depending on which floating point representation is chosen. See
Value reported for error below.
Value reported for
error (floating point)
This setting determines what value is reported if the wireless
field device reports a failure or stops communicating to the
Gateway. This setting is used for floating point values. The
choices are NaN (not a number), +Inf (positive infinity), -Inf
(negative infinity), or Other (user specified).
Value reported for
error (rounded and
native integer)
This setting determines what value is reported if the wireless
field device reports a failure or stops communicating to the
Gateway. This setting is used for rounded or scaled integers. The
choice is a user specified value between -32768 and 65535.
Scaled floating point
maximum integer
value
This determines the maximum integer value for the purpose
scaling integers. 999-65534.
Use global scale gain
and offset?
This setting determines if a global gain and offset is applied for
scaled integers or if each value has a unique gain and offset.
Unique gain and offsets are found on the Modbus Mapping page.
Operation and maintenance
Reference Manual
May 2020
00809-0600-4410
42
Emerson.com
Summary of Contents for 781S
Page 2: ...2 ...
Page 6: ...Introduction Reference Manual May 2020 00809 0600 4410 6 Emerson com ...
Page 20: ...Configuration Reference Manual May 2020 00809 0600 4410 20 Emerson com ...
Page 34: ...Installing the Gateway Reference Manual May 2020 00809 0600 4410 34 Emerson com ...
Page 44: ...Operation and maintenance Reference Manual May 2020 00809 0600 4410 44 Emerson com ...
Page 67: ...Reference data Reference Manual May 2020 00809 0600 4410 54 Emerson com ...
Page 68: ...Quick Start Guide 00825 0600 4410 Rev AA March 2020 Emerson Wireless 1410S Gateway ...
Page 93: ...7 5 Declaration of Conformity Quick Start Guide March 2020 26 Emerson com ...
Page 94: ...March 2020 Quick Start Guide Quick Start Guide 27 ...
Page 95: ...Quick Start Guide March 2020 28 Emerson com ...
Page 98: ...Quick Start Guide 00825 0700 4410 Rev AA March 2020 Emerson Wireless 781S Smart Antenna ...
Page 112: ...Quick Start Guide March 2020 16 Emerson com ...
Page 113: ...March 2020 Quick Start Guide Quick Start Guide 17 ...
Page 115: ...March 2020 Quick Start Guide Quick Start Guide 19 ...
Page 116: ...Quick Start Guide March 2020 20 Emerson com ...
Page 118: ...Quick Start Guide March 2020 22 Emerson com ...
Page 119: ...March 2020 Quick Start Guide Quick Start Guide 23 ...
Page 130: ...Redundant Gateway systems Reference Manual May 2020 00809 0600 4410 64 Emerson com ...