What are the Features of AC 700F controllers?
The AC 700F controllers have the following features.
❖ The AC 700F controller comes with a modular design.
❖ The AC 700F controller is designed according to the IEC 61131-2 standards
❖ The base elements are of different types for the CPU module, FBP interface module, and S700 I/O modules.
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❖ The two types of terminal units available are Screw type and spring type.
❖ These modules can be easily plugged into the terminal units, and then the terminal units can be plugged into the other.
❖ The AC 700F controller is mounted on a DIN rail.
❖ The power supply is 24 VDC.
❖ The communication speed is high between the CPU and the local S700 I/O.
❖ The I/O scan time of the controllers is 2 ms.
❖ The temperature range of AC 700F and S700 I/O extends from 0 °C to 60 °C
The CPU of the AC 700F controller.
❖ The AC 700F controller has a PM 783F CPU.
❖ The CPU is a Freescale power PCTM type.
❖ The RAM consists of program memory of 2 MB SRAM
❖ It has an internal memory of 8 MB SDRAM and 4 MB FLASH ROM
❖ The CPU comes without OS and needs to be loaded during software installation.
❖ The power supply required is 24 VDC.
❖ The maximum power dissipation within the module is 10 W.
❖ This uses an Ethernet network for communication between controllers and operator stations.
❖ The connectivity is achieved using two serial lines one for Modbus and the other for diagnostics.
❖ Serial interface RS-232 for diagnostics and Modbus for the Onboard network interface.
❖ The CPU has a maximum of 8 I/O modules.
❖ The data transfer rate is 100 Mb/s.
❖ The CPU has a Real-time clock, with battery backup.
❖ The Multitasking program execution is cyclic with 8 tasks.
❖ The CPU processing time is different for different instructions.
⮚ 0.71 ms for 1000 binary instructions.
⮚ 0.84 ms for 1000-word instructions.
⮚ 1.36 ms for 1000 floating-point instructions.
The PROFIBUS Communication Interface CI 773F
❖ The PROFIBUS DP master is used as a transmission protocol.
❖ The data transmission rate is 9.6 kb/s to 12 Mb/s
❖ The transmission standard is EIA RS-485
❖ One D-SUB 9-pole, female connector is used for Fieldbus.
❖ Software version 2013 SP1 or higher is mandatory
❖ The PROFIBUS module allows a maximum of 126 slaves.
❖ This interface is used for PM 902F, PM 901F, or PM 783F.
❖ It has a 64kb dual-port memory for data exchange
❖ It has a status display LED s for PWR, STA, Line, and RUN.
❖ It supports controller redundancy with AC 900F.
❖ The power supply required is 24V, 80mA.
❖ The protection class is IP 20.
CPU terminal base TB 711F
❖ The TB 711F is used as a terminal base for the AC 700F controller.
❖ It consists of a 5-pole removable terminal block of 24 V DC.
❖ The TB has two slots one for the CPU and the other for the communication module.
❖ The interface module consists of
⮚ 1 field I/O Bus,
⮚ 2 serial ports, COM1 for serial communication, and COM2 for diagnostics.
⮚ 1 Ethernet port (RJ45).
⮚ 1 Profibus master port.