Input Registers and Outputs Registers
Modbus registers 2201 through 2584 are used to organize all inputs together.
In this format, users can sequentially read all input registers using one Modbus message. Modbus registers 4401 through
4784 organize all outputs together to allow users to sequentially write to all outputs registers using one Modbus message.
Table 9: Input and output registers
Inputs (2201–2584) Outputs (4401–4784)
Modbus Register Address
(Decimal)
16-bit Register Value Modbus Register Address
(Decimal)
16-bit Register Value
2201–2208 Gateway Inputs 1 through 8 4401–4408 Gateway Outputs 1 through 8
2209–2216 Node 1 Inputs 1 through 8 4409–4416 Node 1 Outputs 1 through 8
2217–2224 Node 2 Inputs 1 through 8 4417–4424 Node 2 Outputs 1 through 8
... ... ... ...
2577–2584 Node 47 Inputs 1 through 8 4777–4784 Node 47 Outputs 1 through 8
Refer to your device's datasheet for a list of the active inputs and outputs. Not all inputs or outputs listed in this table may be
active for your system.
Discrete Bit-Packed Registers
Discrete bit-packed registers include the discrete status registers, discrete inputs, and discrete outputs.
Bit packing involves using a single register, or range of contiguous registers, to represent I/O values.
When networks use similar Nodes to gather data using the same I/O registers for each Node, discrete data from multiple
Nodes can be bit packed into a single register on the Gateway. The bit-packed data is arranged by I/O point starting at
Modbus register 6601. For example, Discrete IN 1 for all the Nodes in the network is stored in three contiguous 16-bit
registers.
The most efficient way to read (or write) discrete data from a Sure Cross
®
DX80 Gateway is by using these bit-packed
registers because users can read or write registers for all devices using one Modbus message. The following registers
contain discrete bit-packed I/O values for the Gateway and all Nodes. Values are stored first for the Gateway, then for each
Node in order of Node address.
Figure 15. Discrete bit-packed register addresses and bit positions
Bit-Packed Device Status Registers
Bit Position
Register Address 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
6601 Node 15 Node 14 Node 13 Node 12 Node 11 Node 10 Node 9 Node 8 Node 7 Node 6 Node 5 Node 4 Node 3 Node 2 Node 1 Gateway
6602 Node 31 Node 30 Node 29 Node 28 Node 27 Node 26 Node 25 Node 24 Node 23 Node 22 Node 21 Node 20 Node 19 Node 18 Node 17 Node 16
6603 Node 47 Node 46 Node 45 Node 44 Node 43 Node 42 Node 41 Node 40 Node 39 Node 38 Node 37 Node 36 Node 35 Node 34 Node 33 Node 32
Bit-Packed Discrete Input 1
Bit Position
Register Address 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
6611 Node 15 Node 14 Node 13 Node 12 Node 11 Node 10 Node 9 Node 8 Node 7 Node 6 Node 5 Node 4 Node 3 Node 2 Node 1 Gateway
6612 Node 31 Node 30 Node 29 Node 28 Node 27 Node 26 Node 25 Node 24 Node 23 Node 22 Node 21 Node 20 Node 19 Node 18 Node 17 Node 16
6613 Node 47 Node 46 Node 45 Node 44 Node 43 Node 42 Node 41 Node 40 Node 39 Node 38 Node 37 Node 36 Node 35 Node 34 Node 33 Node 32
Bit-Packed Discrete Output 1
Bit Position
Register Address 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
6691 Node 15 Node 14 Node 13 Node 12 Node 11 Node 10 Node 9 Node 8 Node 7 Node 6 Node 5 Node 4 Node 3 Node 2 Node 1 Gateway
6692 Node 31 Node 30 Node 29 Node 28 Node 27 Node 26 Node 25 Node 24 Node 23 Node 22 Node 21 Node 20 Node 19 Node 18 Node 17 Node 16
6693 Node 47 Node 46 Node 45 Node 44 Node 43 Node 42 Node 41 Node 40 Node 39 Node 38 Node 37 Node 36 Node 35 Node 34 Node 33 Node 32
Table 10: Discrete bit-packed registers for inputs and outputs
Inputs
Outputs
Modbus Register Address
(Decimal)
Description (Inputs) Modbus Register
Address (Decimal)
Description (Outputs)
6601–6603 Status for all devices
Sure Cross
®
DXM700-Bx Wireless Controller
www.bannerengineering.com - Tel: + 1 888 373 6767 21
To Next Page
Loading...
