Objectives

• Vendor neutral
  • Same interface for all display / networking technologies
  • Interface is not RSJ specific and can be used by different labeling software
• Multi vendor (in one store)
  • Optional use of multiple labeling solutions in a store (sharing the same basestations)
• Extendable
  • New fields in request or status block (for new capabilities)
• Easy test
  • Command line sender
  • PDF can be displayed

Concept

• Creates simple JSON file with all label it want to set
• External process to update all labels
• Results are stored in JSON file

ESL Process

ESLSEND <requestJson> <responseJson>

ESL Request File

{
    "01/123456": {
        "bitmap": "base 64 encoded PNG"
        },
    "02/234567": {
        "bitmap: "base64 encoded PNG"
        }
}

ESL Response File

{
    "01/123456": {
        "status": "OK",
        "battery": 100,
        "signal": -50
        },
        
    "02/234567": {
        "status": "TIMEOUT"
        }
}

Battery status is in percent. Signal strength is in dbm.