isConnected method

Acquires communication status by connect method.

Syntax

	isConnected();

Return value

Return value	Description
true	Connected
false	Not connected

Supplementary explanation

When the device is in the sleep mode, the returned value may be incorrect.
When ondisconnect event occurs, this will also be set to false (unconnected).

Quick Access

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[Notes]

Epson ePOS SDK includes patented or patent pending functions. The contents must not be disclosed to third parties.

Epson ePOS SDK for JavaScript

Introduction
help
ePOSDevice object
Common to device objects
- callEvent method
OtherPeripheral object
- send method
- onreceive event
Display object
Keyboard object
POSKeyboard object
- onkeypress event
MSR object
- ondata event
Printer object
HybridPrinter2 object
Scanner object
- ondata event
SimpleSerial object
- sendCommand
- oncommandreply event
GermanyFiscalElement object
- operate method
- ongfereceive event
DeviceHubTerminal object
- shutdown method
- restart method
CommBoxManager object
- openCommBox method
- closeCommBox method
CommBox object
ePosDeviceConfiguration object
- Constructor
- getRegisterdDevices method
Appendix
- Error Code List
  - Error Codes acquired in the Callback Parameter and Counteractions
  - Error Codes acquired in the Onreceive Event and Countermeasure
- Key code list
- List of Supported Objects
- List of Supported APIs
- Printer-specific Support Information
  - TM-m10
  - TM-m30
  - TM-m30II
  - TM-m30II-H
  - TM-m30II-NT
  - TM-m30II-S
  - TM-m30II-SL
  - TM-m30III
  - TM-m30III-H
  - TM-m50
  - TM-m50II
  - TM-m50II-H
  - TM-T20II
  - TM-T20III
  - TM-T82III
  - TM-T88VI
  - TM-T88VII
  - TM-L100
  - TM-T70
  - TM-T70II
  - TM-T88IV
  - TM-T88V
  - TM-U220
  - TM-U220II
  - TM-U330
  - TM-P20
  - TM-P20II
  - TM-P60II (Receipt)
  - TM-P60II (Peeler)
  - TM-P80
  - TM-P80II
  - TM-H6000V
  - TM-T20II-i
  - TM-T70-i
  - TM-T82II-i
  - TM-T83II-i
  - TM-T88V-i
  - TM-T88VI-iHUB
  - TM-U220-i
  - TM-U220IIB-i
  - TM-T70II-DT
  - TM-T70II-DT2
  - TM-T88V-DT
  - TM-T88VI-DT2
  - TM-H6000IV-DT
  - TM-T20
  - TM-T82II
  - TM-T83II
  - TM-T90
  - TM-L90
  - TM-H6000IV
- Usage restriction by firmware version