The VE Series camera memory map expanded. I = Inputs to PLC (outputs from the sensor).
Figure 319. Memory Map Expanded
13.4 Modbus/TCP
The Modbus/TCP protocol provides device
information
using register and coil banks
defined
by the slave device. This
section
defines
the
register and coil banks. By
specification,
Modbus/TCP uses TCP port 502.
The following registers are used to send values back and forth from the vision sensor to the PLC. VE Series camera read-only output data
can be read as Input Registers (30000) using Modbus
function
code 04 (Read Input Registers). Because some devices like the Modicon
family of PLCs cannot access data using the 30000 range of registers, the same values can also be seen as Holding Registers (40000)
using Modbus
function
code 03 (Read Holding Registers).
The Input Bits can be set as Coils using Modbus
function
code 05 (Force Single Coil). The state of the Input ACK Bits and Status Bits can
be read as Inputs (10000) using Modbus
function
code 02 (Read Input Status).
Modbus
Function
Codes Supported
01: Read Coil Status
02: Read Input Status
03: Read Holding Registers
04: Read Input Registers
05: Force Single Coil
06: Preset Single Register
07: Read
Exception
Status
16: Preset
Multiple
Registers
VE Series Smart Camera
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