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A-18 HS-21/HS-41X Handheld Reader User’s Manual
Serial Commands
Example 1 (make the reader beep 3 times):
#%03 Expected output: should make reader beep 3 times
Example 2 (set reader to continuous read, High Density field (FOI0) only):
P(C4)5
Expected output: should set reader to continuous read, High Density field (FOI0) only
Example 3 (set reader to trigger read mode):
P(C4)255
Expected output: should set reader to trigger read
Packetized Commands
Packetized commands consist of packetized data sent from Host-to-Reader to configure
and cause the reader to perform certain functionalities (e.g. settings). Packetized commands
are always enabled, unlike text commands. In addition, they include error detection data,
making them more robust than text commands.
normal-command structure:
[preamble] [command-type] [data-size] [dataopt] [reserved field] [crc14]
preamble: 0xEE 0xEE 0xEE 0xEE
command-type: Single ASCII character in the set defined in Command Types.
data-size:
byte value in range [0,240], which indicates size of data (in bytes) following
this before [reserved field]
dataopt: datum or data datum
data or datum is any byte value in the range [0,255]
reserved field: 0x00
crc14: Two consecutive bytes, each in range [0,127], representing the crc16
value and with the value 0x7F7F, most significant byte first. The packet
crc16 is calculated over the entire packet, excluding the preamble and
the crc14 itself. (See source files crc16.[hc] (Appendix) for details on
the crc16 algorithm and polynomials to be used.)
Note: Most terminal programs will omit or not transmit a NULL (0x00) character entered
in the terminal. So, if one tries to compose the command structure manually and send it
through a terminal program, one might have to send everything before the reserved field,
then send the 0x00 (key Ctrl+@ in ESP terminal view) by itself, and then the CRC14
checksum bytes.
In the first of the examples shown below, for instance, “0xEE 0xEE 0xEE 0xEE 0x23 0x01
0x03” can be sent using ESP’s Terminal, then the NULL character can be sent by typing
“Ctrl + Shift + 2”, and then “0x4E 0x71” can be sent to complete the command sequence.
Examples:
0xEE 0xEE 0xEE 0xEE 0x23 0x01 0x03 0x00 0x4E 0x71
This executes the beep command, causing the reader to beep 3 times. “#%03” in text
command format. The first 4 0xEE are the preamble, followed by the ‘#’ character or 23h
the beep command, and followed by data size of 1 with a data datum of 3 following it. 0x00
is the reserved field followed by two bytes CRC14 of the command + data size + data datum.
- HS-21/HS-41X Handheld Reader 1
- User’s Manual 1
- Disclaimer 2
- Latest Manual Version 2
- Technical Support 2
- What Is Covered? 3
- What Is Excluded? 3
- Limitation of Liability 3
- Table of Contents 4
- Introduction 5
- Highlighting 6
- About This Manual 6
- Statement of RoHS Compliance 8
- 1 Quick Start 9
- Check Required Hardware 10
- USB Interface 11
- RS-232 Interface 12
- Install ESP 13
- Select Model 14
- Click the Show 16
- Connect Symbol 16
- Configure the Reader 17
- Save Changes in ESP 18
- 2 Using ESP 19
- Application Mode 21
- Tree Controls 22
- Menu Toolbar 23
- New Model 24
- Preferences > General Tab 25
- Preferences > Terminal Tab 26
- Sizing Information 27
- Preferences > Advanced Tab 28
- Use Default Storage Location 29
- Document Memo 30
- Model Memo 30
- Connection Wizard 31
- Bar Code Dialog 32
- Send/Receive 33
- Default Current Menu Settings 34
- Default all ESP Settings 34
- Advanced Options 34
- 3 Basic Operations 35
- Practice Targeting 36
- Motion Detect Mode 37
- Dual Optics 38
- Dual Optics Examples 39
- Operational Feedback 40
- 4 Communications 41
- Communications by ESP 42
- Communications Overview 43
- Parity (RS-232) 46
- Data Bits (RS-232) 46
- Preamble 47
- Postamble 48
- Preamble and Postamble by ESP 49
- Keyboard Mapping 50
- Communications Mode 51
- Text Commands 52
- Text Commands by ESP 52
- USB Keyboard Rate 53
- Baud Rate 54
- Stop Bits 54
- Data Bits 54
- Text Command Timeout 55
- 5 Read Cycle 57
- Read Cycle by ESP 58
- External Trigger 59
- Default Continuous Event 60
- Maximum Decodes per Read 61
- Read Cycle Timeout 62
- Read Cycle 63
- Targeting Zone Tolerance 64
- Morphological Preprocessing 65
- Camera Settings 66
- 6 Symbologies 69
- Symbologies by ESP 70
- Data Matrix 71
- Symbologies 73
- Sample Aztec Symbol 73
- Code 39 74
- Code 128 75
- Sample BC412 Symbol 76
- Code 93 77
- Codabar 78
- Interleaved 2 of 5 79
- Pharmacode 82
- GS1 DataBar 84
- Sample PDF417 Symbol 85
- MicroPDF417 86
- Composite 87
- Symbology Identifier 88
- 7 I/O Parameters 89
- I/O Parameters by ESP 90
- No Read Notification 91
- Targeting 92
- Button Stay-Down Time 95
- Motion Detect Event 96
- Image Quality 97
- 8 Advanced Operations 99
- Continuous Read 100
- Mirroring 101
- Motion Detection 102
- Window of Interest 103
- Linear Mode 104
- Terminal 105
- Terminal View 106
- Editing a Macro 109
- Terminal Right-Click Menu 110
- Terminal Dropdown Menu 111
- 10 Utilities 113
- Device Control 114
- Differences from Default 115
- Firmware 116
- ID and Firmware Version 117
- Advanced 118
- Appendices 119
- General Specifications 120
- USB Cable Pinouts 123
- RS-232 Cable Pinouts 123
- Configuration Symbols 124
- Appendix D — Serial Commands 135
- Packetized Commands 136
- Command Types 138
- Simple Protocol 142
- Reader Settings 143
- Binary Dip Switch 144
- Field of Interest 144
- Reader Settings Table 145
- Serial Commands 146
- CRB System 163
- Example CRC16 C Code 163
- Communications Protocol 166
- Appendix F — ASCII Table 167
- Appendix G — Maintenance 168
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