The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

FOXBORO 0303443B Valve position control card

Personal computer The PC (usually laptop) must be provided with at least one RS232 port for serial communication respectively data transfer. Two RS232 ports will give better operation condition. Thereby, the following software must be installed: • REF542plus official released configuration software (example V4B01) • Tera Term Pro software 6.2.4 Tera Term Pro Tera Term Pro is a freeware terminal program for communication between the PC and the hardware of the REF542plus, the Central Unit or the HMI Local Control Unit,The setting for the communication with the Central Unit can be seen in the next figure, which can be stored e.g. using the file name MCTERM:INI: This setting file can be used later, if a communication with the Central Unit is necessary.

The HMI must be interfaced to a PC through the ABB RS232 optical cable. The optical converter must be plugged in the connector situated on the front side of the HMI. By using this interface the configuration file can be downloaded or uploaded from the local PC, which hosts the configuration tool, to the REF542plus central unit. Besides that, protection and operation events and the value of the measurement quantities stored in the REF542plus can be uploaded from the local PC for monitoring purpose.

Behavior after cold start 

To see the behavior after cold start the following condition is to be prepared:
The PC must be connected via the serial interface RS232 to the connector X72.
The Tera Term Pro software is running and configured with the setting file MCTERM.INI.
The related power supply voltage must be connected to connector -X10.
The HMI Local Control Unit must not be connected to the Central Unit. After the central unit starts up, the software Tera Term Pro shows messages as displayed in the following figure.The REF542plus is after the indication “system running” in operation again. If the HMI Local Control Unit is connected, then on the LCD screen the single line diagram and the menu will be displayed.

As can be seen from the table the calibration mode can be entered by selecting the command k. In this mode the offset errors of the signal conditioning chain for the further processing of the analog input signals in the REF542plus unit can be compensated. Moreover the connections to the connector X80 can be defined. Afterwards the calibration data are stored on the EEPROM on the Analog Input Board.
The calibration procedure needs the following preparation:
Sinusoidal generator as already mentioned in chapter 6.2.1.
Put in the jumper X12, which is located near to the back plane connector.

Program flash memory test

Press “p” 16 Mbit flash is being tested. This test will destroy the actual application firmware on the program flash. Application firmware must be downloaded afterwards by “d” command. Test result is shown on the terminal. 6.3.2.3 Configuration flash memory test Press “c” 16 Mbit flash is being tested. This test will destroy the actual configuration (if any) on the data flash. Test result is shown on the terminal 6.3.3 Calibration of the Analog Input The calibration of the REF542plus is normally not necessary, because the related calibration data are stored in the memory of the analog input board itself. But if e.g. one of the CT or VT on the analog input board is removed or substituted, a recalibration has to be done. For this reason the so called factory test mode must be entered by typing f after entering the self test mode. After some seconds, a menu with possible operations is shown on the PC terminal.The following commands are available: