The Fatek protocol provides communication with Fatek Automation’s FBs and FBe series PLCs over Ethernet. inSCADA supports the Fatek protocol with TCP and UDP transport layers in Client role only.
Variant Description Fatek TCP Fatek communication over TCP/IP Fatek UDP Fatek communication over UDP
Connection (IP, port)
Device (Station Address) / Frame (Data Block — Register area) / Variable (Register address)
Connection (IP, port)
Device (Station Address)
Frame (Data Block — Register area)
Variable (Register address)
Parameter Example Description Protocol Fatek TCP or Fatek UDP Protocol selection IP Address 192.168.1.10 PLC IP address Port 500 Fatek Ethernet port (default: 500) Timeout 5000 ms Request timeout duration
Parameter Example Description Station Address 1 PLC station number (1-254) Scan Time 1000 ms Scan period Scan Type PERIODIC PERIODIC or FIXED_DELAY
Parameter Example Description Type D Register area type (see below) Start Address 0 Starting register address Quantity 50 Number of registers/bits to read
Fatek PLCs have multiple memory areas. These areas are divided into two main categories: discrete (bit) and register (word) .
Discrete (Bit) Areas:
Type Description Access X Digital input (Input) Read-only Y Digital output (Output) Read/Write M Internal relay Read/Write S Step relay Read/Write T Timer contact Read-only C Counter contact Read-only
Word (16-bit) Register Areas:
Type Description Access WX Input word register Read-only WY Output word register Read/Write WM Internal relay word register Read/Write WS Step relay word register Read/Write WT Timer current value (16-bit) Read-only WC Counter current value (16-bit) Read-only RT Timer preset value (16-bit) Read/Write RC Counter preset value (16-bit) Read/Write R Data register (16-bit) Read/Write D Data register (16-bit) Read/Write F File register (16-bit) Read/Write
Double Word (32-bit) Register Areas:
Type Description Access DWX Input double word Read-only DWY Output double word Read/Write DWM Internal relay double word Read/Write DWS Step relay double word Read/Write DWT Timer current value (32-bit) Read-only DWC Counter current value (32-bit) Read-only DRT Timer preset value (32-bit) Read/Write DRC Counter preset value (32-bit) Read/Write DR Data register (32-bit) Read/Write DD Data register (32-bit) Read/Write DF File register (32-bit) Read/Write
Parameter Example Description Start Address 0 Register offset within the frame Type FLOAT Data type
Data Type Size Description BOOL 1 bit Discrete (bit) value INT16 16 bit Signed 16-bit integer UINT16 16 bit Unsigned 16-bit integer INT32 32 bit Signed 32-bit integer UINT32 32 bit Unsigned 32-bit integer FLOAT 32 bit 32-bit floating point (IEEE 754)
Frame: D register, Start Address: 0, Quantity: 20
D0 → Start: 0, Type: INT16 (first data register) / D1 → Start: 1, Type: UINT16 (second data register) / D2-3 → Start: 2, Type: FLOAT (32-bit float, occupies 2 registers) / D4-5 → Start: 4, Type: INT32 (32-bit integer, occupies 2 registers) / D10 → Start: 10, Type: INT16 / M0 → Start: 0, Type: BOOL (first internal relay) / M1 → Start: 1, Type: BOOL (second internal relay)
Frame: D register, Start Address: 0, Quantity: 20
Variable examples:
D0 → Start: 0, Type: INT16 (first data register)
D1 → Start: 1, Type: UINT16 (second data register)
D2-3 → Start: 2, Type: FLOAT (32-bit float, occupies 2 registers)
D4-5 → Start: 4, Type: INT32 (32-bit integer, occupies 2 registers)
D10 → Start: 10, Type: INT16
Frame: M relay, Start Address: 0, Quantity: 32
Variable examples:
M0 → Start: 0, Type: BOOL (first internal relay)
M1 → Start: 1, Type: BOOL (second internal relay)
M16 → Start: 16, Type: BOOL
Feature Fatek TCP Fatek UDP Reliability High (guaranteed delivery) Low (packet loss possible) Latency Normal Low Usage General purpose (recommended) Low-latency requirements
