meter-protocol-serial

698/645 Electricity Meter Protocol Serial Port Frame Sending and Parsing Skill

Trigger Conditions

This skill is triggered when the user's requirement involves any of the following keywords:

```
698
```
、
```
645
```
、
```
DL/T698
```
、
```
DL/T645
```
```
OAD
```
、
```
DI
```

serial frame sending

、

frame assembly

、

COM port

```
protocol debugging
```
、
```
regression test
```

frame sending verification

、

read meter data

、

write meter parameters

Function Overview

This skill provides unified frame assembly, sending, receiving and parsing capabilities for 698/645 electricity meter protocols:

Frame-only mode (no port parameter): Output the assembled request frame in hexadecimal
Serial port closed-loop mode (with port parameter): Send request, receive response, parse result

Usage

Quick Invocation

Linux / macOS / Native Python

bash

# 645读数据（只组帧）
python3 $SKILL_DIR/scripts/protocol_cli.py proto=645 op=read di=00010000

# 645读数据（串口发送）
python3 $SKILL_DIR/scripts/protocol_cli.py port=/dev/ttyUSB0 proto=645 op=read di=00010000

# 698读数据
python3 $SKILL_DIR/scripts/protocol_cli.py proto=698 op=read oad=40010200

# 698设置参数
python3 $SKILL_DIR/scripts/protocol_cli.py proto=698 op=set oad=43000300 value=bool:true

Windows / WSL (Important Differences)

When using Windows serial port in WSL, it is recommended to use the Python wrapper script, which will automatically convert to
python.exe
+ Windows path:

bash

# WSL中访问Windows COM口（推荐方式：使用 Python 包装脚本）
python3 $SKILL_DIR/meter-cmd.py port=COM10 proto=645 op=read di=04000401

# 或者手动转换路径
SKILL_PATH=$(wslpath -w /home/xx/.agents/skills/meter-protocol-serial/scripts/protocol_cli.py)
python.exe "$SKILL_PATH" port=COM10 proto=645 op=read di=04000401

Common Errors:

bash

# 错误方式1（WSL Python无法访问Windows串口）
python3 protocol_cli.py port=COM10 ...  # 会报错: No such file or directory

# 错误方式2（Windows Python无法直接访问WSL路径）
python.exe /home/xx/.../protocol_cli.py  # 会报错: can't open file

WSL Serial Port Mapping:

Windows	WSL Device
COM1	/dev/ttyS1
COM10	/dev/ttyS10

Windows Native PowerShell/CMD:

powershell

# Windows直接运行（PowerShell）
python.exe C:\path\to\scripts\protocol_cli.py port=COM10 proto=645 op=read di=04000401

# Windows直接运行（CMD）
python C:\path\to\scripts\protocol_cli.py port=COM10 proto=645 op=read di=04000401

Regression Test with Assertion

bash

# Linux/WSL通用（只组帧，无串口）
python3 $SKILL_DIR/scripts/protocol_cli.py proto=645 op=read di=00010000 expect=ack

# WSL+Windows串口（推荐直接走包装脚本）
python3 $SKILL_DIR/meter-cmd.py port=COM3 proto=645 op=read di=00010000 expect=ack

Supported Protocols

Protocol	Operation	Description
DL/T645-2007	read	Read data
DL/T645-2007	write	Write data
DL/T698.45	read	GET.request.normal
DL/T698.45	set	SET.request.normal

Input Parameters

General Parameters

Parameter	Description	Example
proto	Protocol type	645 or 698
op	Operation type	read / write / set
port	Serial port (optional)	/dev/ttyUSB0 or COM3
timeout_ms	Timeout duration	2000
baud	Baud rate	2400 (default for 645), 9600 (default for 698)
data_bits	Data bits	8
parity	Parity bit	even / odd / none
stop_bits	Stop bit	1
expect	Assertion condition	ack / hex:0102 / bool:true / int:1
decode_hint	Decoding hint	hex / ascii / uint16_le / uint32_le / bcd
note	Note	Any text

645 Dedicated Parameters

Parameter	Description	Example
di	Data identifier (8-bit hexadecimal)	00010000
addr	Meter address (12-bit BCD)	000000000001
value	Write data value	hex:010203 / ascii:abc
fe_count	Number of leading FE bytes	4
raw_prefix	Prefix data	hex:041234
raw_suffix	Suffix data	hex:0000

698 Dedicated Parameters

Parameter	Description	Example
oad	Object Attribute Descriptor (8-bit hexadecimal)	40010200
server_addr	Server address	000000000000
client_addr	Client address	00
ca	Client address (abbreviated)	00
value	Write data value	bool:true / int32:123 / string:abc

Value Format

645 Protocol:

```
hex:01020304
```
- Raw hexadecimal data
```
ascii:abc
```
- ASCII string

698 Protocol:

```
bool:true|false
```
- Boolean value
```
int8:1
```
,
```
int16:1
```
,
```
int32:1
```
- Signed integer
```
uint8:1
```
,
```
uint16:1
```
,
```
uint32:1
```
- Unsigned integer
```
enum:1
```
- Enum value
```
octet:112233
```
- Octet string (with length prefix)
```
string:abc
```
- Visible string (with length prefix)
```
hex:010203
```
- Raw hexadecimal (directly used as Data)

Output Format

MODE=frame_only|serial_roundtrip
PROTO=645|698
OP=read|write|set
TARGET=di:xxx|oad:xxx
REQUEST_HEX=68 AA AA ... CS 16
RESPONSE_HEX=68 BB BB ... CS 16  (串口模式)
FRAME_CHECK=ok|fail|partial
DECODE_STATUS=ok|partial|fail
RESULT=success|error|timeout
DATA_HEX=01020304
DATA_TYPED=typed_value  (如果有)
ASSERT_RESULT=pass|fail|skipped
ASSERT_REASON=...  (如果有)
SUMMARY=简短中文总结

645 Specific Output

645_ADDR=000000000001
645_CTRL=91
645_DI=00010000

698 Specific Output

698_SERVER_ADDR=45AAAAAAAAAAAA  (地址特征字节+6字节地址)
698_CLIENT_ADDR=00
698_CTRL=43  (控制域: DIR=0,PRM=1,分帧=0,扰码=0,功能码=3)
698_PIID=00
698_OAD=40010200
698_DAR=00  (数据访问结果，00=成功)

Exit Code

Code Value	Meaning
0	Success
2	Input parameter error
3	Serial port opening or sending failure
4	Timeout with no response
5	Response received but parsing failed
6	Assertion failed

AI Usage Suggestions

Response Order

When users use this skill, AI should reply in the following order:

Execute command: Provide the actual executed CLI command
Key output: Extract key fields such as REQUEST_HEX, RESULT, ASSERT_RESULT, etc.
Brief explanation: Explain the meaning of the result and suggestions for next steps

Example Scenarios

Scenario 1: User says "Help me assemble a 645 data reading frame"

执行命令：
python3 $SKILL_DIR/scripts/protocol_cli.py proto=645 op=read di=00010000

输出：
MODE=frame_only
PROTO=645
OP=read
TARGET=di:00010000
REQUEST_HEX=FEFEFEFE6800000000000068110433333333AD16
...
SUMMARY=组帧成功: FEFEFEFE6800000000000068110433...

Scenario 2: User says "Verify if data can be read from COM3 port"

执行命令：
python3 $SKILL_DIR/scripts/protocol_cli.py port=COM3 proto=645 op=read di=00010000 expect=ack

输出：
MODE=serial_roundtrip
PROTO=645
OP=read
...
ASSERT_RESULT=pass
SUMMARY=断言通过: 收到响应

Notes

port parameter is optional: When there is no port, it enters frame-only mode and will not open the serial port
Default address:
- 645 default address
```
AAAAAAAAAAAA
```
  (12-bit BCD wildcard address)
- 698 default server address
```
AAAAAAAAAAAA
```
  (6-byte wildcard address, address feature byte = 0x45), client address
```
00
```
Default baud rate: 645 default 9600bps, 698 default 9600bps
Timeout handling: Default timeout is 2000ms, can be adjusted via timeout_ms
Assertion failure: When assert_result=fail, the process returns a non-zero exit code, which can be used for script automation

Module Structure

scripts/
├── protocol_cli.py      # CLI主入口
├── request_parser.py    # 请求解析
├── profiles.py          # 默认配置
├── serial_transport.py  # 串口收发
├── proto_645.py         # 645协议处理
├── proto_698.py         # 698协议处理
├── value_codec.py       # 值编解码
└── result_formatter.py  # 结果格式化

V1 Limitations

698: Does not support login, link establishment, security authentication, secure transmission
698: Does not support ACTION and ROAD
645: No dedicated semantic parsing for various service DIs
Both protocols: Only support standard plaintext read and write, do not support manufacturer private extensions

meter-protocol-serial

NPX Install

Tags

SKILL.md Content (Chinese)

meter-protocol-serial

Trigger Conditions

Function Overview

Usage

Quick Invocation

Linux / macOS / Native Python

Windows / WSL (Important Differences)

Regression Test with Assertion

Supported Protocols

Input Parameters

General Parameters

645 Dedicated Parameters

698 Dedicated Parameters

Value Format

Output Format

645 Specific Output

698 Specific Output

Exit Code

AI Usage Suggestions

Response Order

Example Scenarios

Notes

Module Structure

V1 Limitations