Modbus; Modbus-Funktionen (Slave) - janitza UMG 104 Bedienungsanleitung

Allgemeines

Modbus

Modbus-Funktionen (Slave)

Das UMG 104 unterstützt als Slave folgende Modbus-Funktionen:
03 Read Holding Registers
Reads the binary contents of holding registers (4X references) in the slave.
04 Read Input Registers
Reads the binary contents of input registers (3X references) in the slave.
06 Preset Single Register
Presets a value into a single holding register (4X reference). When broadcast, the function presets the same register refe-
rence in all attached slaves.
16 (10Hex) Preset Multiple Registers
Presets values into a sequence of holding registers (4X references). When broadcast, the function presets the same regis-
ter references in all attached slaves.
23 (17Hex) Read/Write 4X Registers
Performs a combination of one read and one write operation in a single Modbus transaction. The function can write new
contents to a group of 4XXXX registers, and then return the contents of another group of 4XXXX registers. Broadcast is
not supported.
UMG 104
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