TECHNICAL NOTE TNOI24 Title: G3 Operator Interface communication with Mitsubishi Q PLC over RS232 Product(s): G3 Operator Interfaces Mitsubishi PLC QJ71C24-R2 This technical note presents how to connect a Red Lion G3 HMI with a Mitsubishi Q series PLC. The same setup can be used to program a Modular Controller Enhanced Master. Programming of the G3 is done using Crimson 2.0 software, build 230 or higher, while Mitsubishi GX device software programs the Q series PLC. SYSTEM SETUP: The communication setup is as follow: RS232 Cable CH1: Transmission Channel CH2: Reception Channel G310 QJ71C24N-R2 Fig. 1: Communication Setup CABLE INFORMATION: RS232 Communication port information for the Mitsubishi QJ71C24N-R2 module: Communication cable CBLMIT03 from Red Lion Controls can be used to connect a G3 (or Enhanced Master or Data Station) RS232 port to the Mitsubishi QJ71C24N-R2 communication card. The table below presents the communication cable pin out between the Enhanced master and the QJ71C24N-R2 Communication card: Information on the cable is available here: http://www.redlion.net/Support/Cable/CBLMIT03.pdf G3 COMMUNICATION SETUP: COMMUNICATION SETUP IN THE G3 MUST BE AS FOLLOWS: ON THE RS232 COMMUNICATION PORT Driver on RS232: Mitsubishi A/Q/FX Series PLC – MELSEC Frame Validation: No Baud Rate: 9600 Data Bits: 8 bits Stop Bits: One Parity: Odd ON THE PLC BELOW THE RS232 COMMUNICATION PORT Drop Number: 0 Melsec Control Format: Melsec1 Screen Shots Fig. 2 and Fig. 3 are from Crimson 2.0 in the communication Module. Fig. 2 – RS232 communication port setup in Crimson 2.0 software. Fig. 3 – PLC1 (i.e. Mitsubishi Q) communication setup in Crimson 2.0 software. MITSUBISHI GX_DEV. SETTINGS The screen shot Fig.4 shows the communication settings in Gx Developer environment. Fig.5 and 6 are part of Fig.4 showing the windows to access the QJ71C24-R2 settings. In this example, the communication card is available in slot 9. TO ACCESS THE SETTINGS, Go in the “PLC Parameter” from the side menu, Choose the “I/O Assignment” tab, Check if the communication module is present in the slot you want, Click on “Switch Setting” to setup the module. Fig. 4 –GX. Developer environment with PLC parameter windows open. SWITCH SETTING EXPLANATIONS IN GX. DEVELOPER Switch 1 and 2 are configuring Com port 1 settings. Therefore, Switch 3 and 4 refer to Com port 2 settings. In this example, the switch settings are: Switch 1 - 05C6 Switch 2 - 0001 Explanation for switch 1: - 05 means 9600 baud rate. - C6 is explained in the table below. HEX C 6 Binary 1 1 0 0 0 1 1 0 Bit Number 7 6 5 4 3 2 1 0 Bit 0 = Independent Control of the port Bit 1 = 8 data bits Bit 2 = yes to parity Bit 3 = Odd parity Bit 4 = 1 stop bit Bit 5 = no checksum Bit 6 = Write during run enabled Bit 7 = Change setting enabled Note: Frame Validation (Red Lion) and Checksum (Mitsubishi) are the same. Please set accordingly. Fig. 5 – PLC parameter window showing I/O assignment. Fig. 6 – Switch Setting window for I/O. Communication module in slot 9.
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