Banner SureCross DX80 Wireless Networks - Manual (Page 29)

Modbus RTU Setup Submenu
The Modbus RTU Setup submenu contains the read and write map screens for setting up the Modbus RTU Slave option. The two
screens contained within the Modbus RTU Setup tab apply only to the Ethernet processor on the GatewayPro or a DX83 device.
RTU Read Map
The RTU Read Map screen creates a map entry to read data from one or more remote Modbus RTU serial devices. Click on the map
number in the left column to view more detail and to insert or delete maps.
Maps entered on the RTU Read Map page only read data from remote devices into local registers. To write data to those remote devices,
go to the RTU Write Map tab.
This screen displays an abbreviated list of maps. Any parameter shown may be changed. To view and/or modify the complete set of
parameters, click on the map number shown in the left column and use the expanded RTU Read Map page. To submit changes, click the
Update button.
For each remote register to be read, enter the register type, remote register format, register number, remote unit number, and local
register number.
Local Reg-
ister Num-
ber After the remote register is read and the data
multiplied by the scale factor, the data is writ-
ten to the Local Register number.
Name The name is optional and used only for dis-
play purposes. The name acts as an identifier
for a specific register map. Type in the name
in this screen.
Prev and
Next If there are more than 16 devices or rules/
maps, use the Prev and Next buttons to dis-
play the next screen of information.
Remote
Register
Format Select the format of the remote register from
integer, unsigned, double, float, or bit. An in-
teger is a 16-bit (signed) number, an un-
signed format is a 16-bit unsigned number, a
double refers to a double precision (32-bit)
value, a floating value is a floating point num-
ber, and a bit value is a single bit that can ei-
ther be a 0 or a 1 (discrete value.)
Remote
Register
Number The Remote Register entry is the register be-
ing read.
Re-
mote
Type Select a type from the following drop-down list:
none, coil (output), discrete input, input register,
or holding register. Banner Engineering’s Sure-
Cross™ slave devices use only input registers
and holding registers. When using slave devices
from other manufacturers, please refer to the
manufacturer’s documentation to determine what
I/O types they use.
• Coil (output). 1xxxx - Other slave devices,
write only, 1 bit
• Discrete Input. 3xxxx - Other slave devices,
read only, 1 bit
• Input Register. 3xxxx - SureCross™ slave
devices, read only, 16 bit
• Holding Register. 4xxxx - SureCross slave
devices, read/write, 16 bit
Selecting None for remote type negates the rule
even though it continues to appear in the list until
deleted. Unused rules at the end of the list al-
ways show None as the remote type. To prevent
these from displaying, reduce the number of
maps enabled.
Scale The raw data in the remote register is multiplied
by the scale factor to produce the data appearing
SureCross Web Configurator
rev. - www.bannerengineering.com - tel: 763-544-3164 29