ESP-0806-D

ESP-0806 Iranian PLC: A Comprehensive Overview

The ESP-0806 PLC, manufactured by Ehsan Sanat Pasargad, is available in four series: B, C, D, and E.

Features of the ESP-0806-D series:

• 8 digital inputs / 6 digital outputs
• 24V or 220V input voltage
• 24V or 220V supply voltage
• Relay or transistor output
• 512 timers
• 512 counters
• Real-time clock
• 2x RS485 serial port with full MODBUS-RTU support (Master/Slave)
• USB port for programming and debugging
• Ability to define two 0-15 numbers directly on the device without a display
• Expandable with up to 16 input/output expansion cards
• Optional internal EEPROM memory: 256KB or 512KB
• 256KB Programming Memory

Programming Language: The ESP-0806 utilizes advanced 32-bit processors from STM Microelectronics (USA) and employs a C#-based structured programming language. This enables the creation of highly complex programs with ease. Programming is accomplished via the USB port (using a printer cable) without the need for any additional hardware.

C# offers a more intuitive programming experience compared to traditional languages like ladder logic or function block diagrams. It provides the power of the C programming language along with a robust library for various calculations. Additionally, PLC-specific commands are defined, combining the flexibility of a powerful PLC with the efficiency of C. A comprehensive programming manual is available on the manufacturer’s website. The ESP-0806 software library is continually being expanded to support new features.

Programming Example: To turn on output 2 when input 3 is activated and maintain the state when input 3 is deactivated:

if (I[3].Value) SetQ(2);

ESP-0806-C: Ideal for Small to Medium-Sized Applications With 8 digital inputs and 6 digital outputs, and the ability to connect up to 16 expansion cards, the ESP-0806-C is well-suited for a wide range of applications. Its 256KB programming memory allows for substantial program execution. The serial port enables communication with up to 31 other devices such as inverters, displays, power meters, and I/O modules that support MODBUS-RTU.

MODBUS-RTU Communication The ESP-0806 series C, D, and E support MODBUS-RTU communication.

Internal EEPROM Memory Optional internal EEPROM memory can be used as a data logger. Data can be accessed using the RS232C port or through monitoring software that supports MODBUS-RTU.

Defining Numbers Without a Display The ESP-0806 series B, C, and D feature two binary switches for defining two 0-15 numbers directly on the device without a display.

Auxiliary 24V Power Supply Models with AC supply and DC input provide a 24V, 700mA output for use in control panels.