User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
Page
163
Rx Modbus
Polls 16-bit registers or digital channels from a Modbus device. The data received from a Modbus device is
stored in network registers corresponding to the address of the Modbus device.
Comment: A 12-character description.
RTU #: (#R1 to #R2048 or 1 to 249) The source Modbus RTU (or PLC) to poll the data from. Can be
specified as a local register or a constant.
Dest. Offset: (-9999 to 9999 [or -1 to -65535 when using extended addressing]) When data is polled from a
Modbus device it is stored in the RTU’s network registers. An RTU is unable to store the complete Modbus
register range. Modbus registers that are out of range can be moved into the correct range by using a
Destination Offset. Modbus registers that are in range but would be stored in Network Analog or Network
Digital registers can also be offset so that they are stored in the more easily accessible Network Registers.
Note: If a positive or zero Destination Offset is required, extended addressing cannot be used.
Modbus Address Extended Modbus Address Stored In RTU At *
00,001 to 01,024 L000,001 to L001,024 #NDrrr.1.1 to #NDrrr.64.16
01,025 to 02,000 L001,025 to L002,000 Not Stored!
02,001 to 09,999 L002,001 to L009,999 #NRrrr.1.1 to #NRrrr.500.15
L010,000 to L065,535 Not Stored!
10,001 to 11,024 L100,001 to L101,024 Same as 00,001 to 01,024
11,025 to 12,000 L101,025 to L102,000 Same as 01,025 to 02,000
12,001 to 19,999 L102,001 to L109,999 Same as 02,001 to 09,999
L110,000 to L165,535 Not Stored!
30,001 to 39,999 L300,001 to L309,999 Same as 40,001 to 49,999
40,001 to 40,512 L400,001 to L400,512 #NArrr.1.1 to #NArrr.64.8
40,513 to 41,000 L400,513 to L401,000 Not Stored!
41,001 to 43,048 L401,001 to L403,048 #NRrrr.1 to #NRrrr.2048
43,049 to 49,999 L403,049 to L409,999 Not Stored!
L410,000 to L465,535 Not Stored!
* Where rrr is the source RTU (or PLC) address where the data came from.
Examples of how to use a Destination Offset are shown below.
Modbus Device
Address 3
Address 3
Network
Registers
Modbus
Register
40600
If Dest. Offset=0, data is
not stored by the RTU!
If Dest. Offset=1000, data is
stored in 41600 (#NR3.600)
RTU
Modbus Device
Address 3
If Dest. Offset=0, data is
stored in 40005 = #NA3.1.5
(a network analog register)
If Dest. Offset=1000, data is
stored in 41005 = #NR3.5
(a network register)
RTU
Address 3
Network
Analogs
Address 3
Network
Registers Modbus
Register
40005