HMI OP 320 TEARDOWN - absolutelyautomation...HMI OP 320 TEARDOWN OP320 OP 320 HMI is a monochrome...

HMI OP 320 TEARDOWN OP320 OP 320 HMI is a monochrome graphic panel with 20 configurable keys. It's supposed manufacturer is XINJE Electric Co, but there is not a visual reference in the case nor in circuit boards. Its aspect is very similar to KINCO MD204L. This HMI cost around 40 dollars (shipment included!), is powered by 24 V DC and have RS-232 and RS-422 communication interfaces, its programmed using the RS-232 port using a proprietary software. Have multiple industrial communication protocols. so is a very attractive solution to interface microcontroller based systems, because its integrated display, keyboard, control logic, using only a serial port, all encased in an "industrial like" case that the manufacturer claims to be IP65 for front panel. TEARDOWN PROCESS To open the OP 320 case a 2.4 mm x 40 mm Phillips screwdriver is required First, remove 24V power terminal and release the 4 screws that holds the back case. Then pull the main board to disconnect from the display board, the boards are connected to a 20 pin single line connector. More info: Absolutelyautomation.com @absolutelyautom

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Transcript of HMI OP 320 TEARDOWN - absolutelyautomation...HMI OP 320 TEARDOWN OP320 OP 320 HMI is a monochrome...

HMI OP 320 TEARDOWN

OP320

OP 320 HMI is a monochrome graphic panel with 20 configurable keys. It's supposed manufacturer is XINJE Electric Co, but there is not a visual reference in the case nor in circuit boards. Its aspect is very similar to KINCO MD204L.

This HMI cost around 40 dollars (shipment included!), is powered by 24 V DC and have RS-232 and RS-422 communication interfaces, its programmed using the RS-232 port using a proprietary software. Have multiple industrial communication protocols. so is a very attractive solution to interface microcontroller based systems, because its integrated display, keyboard, control logic, using only a serial port, all encased in an "industrial like" case that the manufacturer claims to be IP65 for front panel.

TEARDOWN PROCESS

To open the OP 320 case a 2.4 mm x 40 mm Phillips screwdriver is required

First, remove 24V power terminal and release the 4 screws that holds the back case. Then pull the main board to disconnect from the display board, the boards are connected to a 20 pin single line connector.

More info: Absolutelyautomation.com @absolutelyautom

Page 2: HMI OP 320 TEARDOWN - absolutelyautomation...HMI OP 320 TEARDOWN OP320 OP 320 HMI is a monochrome graphic panel with 20 configurable keys. It's supposed manufacturer is XINJE Electric

Carefully disconnect the membrane keyboard connector (9 pin single line). This allows to totally disconnect the main board. The last step is to remove the spacer and the 3 screws that hold together the display board with the front panel.

ELECTRONIC BOARDS AND MAIN COMPONENTS

MOST IMPORTANT SEMICONDUCTOR LIST IN MAIN BOARDPart # DescriptionScratched info Microcontroller, looking the package and pin

arrangement, probably an MCS-51 compatible with onboard RAM and FLASH

LM2576S-5.0 SWITCHER 3A Step-Down Voltage RegulatorSP202EEN Low-Power, Slew-Rate-Limited RS-485/

RS-422 Transceivers74HC245D octal transceiver featuring non-inverting 3-state

bus compatible outputs in both send and receive directions

7705AC integrated-circuit supply-voltage supervisorsMAX 485 Low-Power, Slew-Rate-Limited RS-485/

RS-422 Transceivers

More info: Absolutelyautomation.com @absolutelyautom

Page 3: HMI OP 320 TEARDOWN - absolutelyautomation...HMI OP 320 TEARDOWN OP320 OP 320 HMI is a monochrome graphic panel with 20 configurable keys. It's supposed manufacturer is XINJE Electric

MAIN BOARD

MOST IMPORTANT SEMICONDUCTOR LIST IN DISPLAY BOARDPart # DescriptionJXD 19264A LCD 192 x 64 graphic matrix display7660 Switched capacitor voltage converter

More info: Absolutelyautomation.com @absolutelyautom