UniOP ePALM10 Handheld HMI

Important limitation: The PLC port of ePALM10 does not include a 20mA current loop interface, and communication modules TCM04 (Interbus), TCM07 (Simatic S7 MPI without optical isolation), and TCM10 (Ethernet) are not supported. When selecting, be sure to check this list to avoid purchasing modules that cannot be used.

Communication Cable Wiring Specification

EPALM10-0061 comes standard with a 5-meter communication cable (ePALM10-0062 is 10 meters), with no connectors at the free end of the cable, designed for direct access to control cabinets. The cables are color coded according to the signal: power cable 0.5mm ² (red=+24VDC, black=Common), PC/printer port and PLC port signal cable 0.14mm ² (26AWG), safety signal cable 0.35mm ².

The following key specifications must be followed when wiring:

Magnetic ring (Ferrite Toroid) is a mandatory component - included with the product and installed above the cable to ensure normal operation. If the magnetic ring is lost during on-site modification, it may cause communication abnormalities;

The shield trace must be reliably connected, with a length of 25cm in the 4 × 1mm ² section and a cable length of no more than 10cm at the terminal;

When communicating with RS-422/RS-485, RXD and CTS signals should not be suspended: RXD should be connected to GND, CTS should be connected to+5V output;

The standard cable layout includes PC/printer port and PLC port signals, which can directly complete programming connections and RS-232/RS-422/RS-485 field device connections; To use the Aux port, the PLC port wiring must be manually moved to CN1.

PC programming connection: At least a power supply and programming port need to be connected. Connect to the PC's COM port (D-Sub 9) as follows: CN2 pin7 (RXD, orange) ↔ PC pin3（TXD）； CN2 pin9 (TXD, white) ↔ PC pin2（RXD）； CN2 pin6 (GND, gray) ↔ PC pin5（GND）。

Expansion of fieldbus module

EPALM can be connected to the fieldbus through a standard TCM communication module, and the currently supported module list is:

Module Bus Remarks

TCM01 Siemens Simatic S7 MPI is suitable for point-to-point configuration

TCM02 Moeller Suconet K is suitable for point-to-point configuration

TCM03 DeviceNet has limitations on bus speed and network configuration

TCM08 Profibus DP bus speed and network configuration have limitations

TCM09 CANopen bus speed and network configuration have limitations

Installation precautions:

Module insertion requires shell opening operation: After inserting the TCM module, the shell must be carefully reset to ensure confidentiality (IP65 integrity depends on this), otherwise the protection level will be invalid;

The default wiring of CN1 must be manually changed: the fieldbus topology does not allow 5-10 meter long drop segments, and all bus signals must include incoming and outgoing line segments (hand in hand topology), and cannot be connected in a single ended star connection;

The CA01 interface board does not support bus termination resistors: ePALM cannot be used as a network endpoint node unless an external termination resistor is applied - this is a common hidden fault source in Profibus/DeviceNet networks. When debugging does not work, first check the endpoint.

Taking the connection of Simatic S7 MPI network as an example: it is recommended to move the necessary wires from CN3 (PLC port) to CN1 (Aux port) - the Blue Red wire (formerly CN3 pin1 CHA+) to CN1 pin4 (signal A), the Blue Black wire (formerly CN3 pin2 CHA -) to CN1 pin5 (signal B), and the Black wire (formerly CN3 pin6 GND) to CN1 pin1. A. The B signal is connected to the MPI network and cannot connect terminating resistors within ePALM.

LED indication and button diagnosis

Five system LEDs on the front panel form a quick fault diagnosis tool:

Meaning of LED color/status

Red eye icon OFF/Blink/ON No hardware malfunction/low battery level/hardware malfunction

Eye icon green OFF/ON no button/any button pressed (visual feedback)

Power icon green OFF/ON hardware failure/device running

Communication icon green BLINK/ON communication error/communication normal

Warning icon red OFF/Blink/ON No alarm/Alarm pending confirmation/Alarm activated

The backup icon is green and user controllable (Macro Editor LED 65), and the recipe/event backup is in progress and lit up

The flashing red LED (low battery level) is a maintenance warning signal, and battery replacement should be arranged in a timely manner. 20 user LEDs are mapped according to RDA standard: L1~L9 correspond to F1~F9 function keys, L18~L28 correspond to numeric and symbol keys (e.g. L20 corresponds to "3/clock", L26 corresponds to "9/print").

Standard process for replacing lithium batteries

The lithium battery (Duracell DL2430) maintains three types of data: hardware real-time clock, event list, and formula data. Attention: Replacing the battery will result in the loss of the above data, so it is necessary to export the recipe and event data backup through UniOP Designer before replacement.

Standard replacement process:

Turn off the power of the device;

Loosen the 6 screws that secure the plastic casing with a screwdriver;

Open the handheld device, with the battery located on the CPU subsystem board;