Modbus Tcp - Banner ZMX Series Instruction Manual

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6.2 Modbus TCP
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The Modbus 23 TCP protocol provides device information using register and coil banks defined by the slave device. Modbus
TCP can also be used to modify parameters of the sensor.
Important: Parameter changes over Modbus TCP are only stored in temporary memory and are not
retained through a reboot unless the Save Parameters Permanent Input Bit is used.
This section defines the register and coil banks. By specification, Modbus TCP uses TCP port 502.
The Modbus Client must use a UNIT ID of 1 or higher to connect to the ZMX sensor. The Modbus TCP remote unit identifier
is used with Modbus TCP devices that are composites of several Modbus devices. For example, on Modbus TCP to Modbus
RTU gateways. In this case, the unit identifier tells the Slave Address of the device behind the gateway. Most Modbus TCP
Clients use a Unit ID of 1 or higher.
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
Table 5: Modbus TCP Input and Output Bits
Input Bits
Function Code 05: Force Single Coil
Coil NAME
00001 Update ROI Parameters
00002 Save Parameters Permanent
00003 Reset Application Results
00004 Trigger
00005 reserved
00006 reserved
00007 reserved
00008 reserved
00009 reserved
00010 reserved
00011 reserved
00012 reserved
00013 reserved
00014 reserved
00015 reserved
00016 reserved
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Modbus is a registered trademark of Schneider Electric USA, Inc.
Output Bits
Function Code 02: Read Input Status
Input
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
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ZMX Series 3D Time of Flight Sensor
NAME
Update ROI Parameters ACK
Save Parameters Permanent ACK
Reset Application Results ACK
Trigger ACK
reserved
reserved
Fill Level Limit
reserved
Peak Height Limit
reserved
Discrete Output State (1)
Discrete Output State (2)
reserved
reserved
reserved
Configuration Error
39