远程控制打印机 Remote Printer Control

完整示例 Complete Example

07 00 30 30 31 00 52 45 42 4F 4F 54 20 50 52 49 4E 54 45 52

ASCII 字符与 HEX 编码对照表 ASCII to HEX Conversion Table

字符 Character	HEX 值 HEX Value
0-9	30-39
A-Z	41-5A
空格 Space	20

REBOOT PRINTER 字符对应 REBOOT PRINTER Character Mapping

R	52	E	45	B	42
O	4F	T	54	空格 Space	20
P	50	I	49	N	4E
T	54	E	45	R	52

注意事项 Notes

• 单据号唯一性：每次发送指令时必须使用不同编号，打印机对重复单据号的指令将不予处理 Document number uniqueness: Each command must use a different number, printer will ignore commands with duplicate numbers
• 字符编码规则：所有字符均采用ASCII码的十六进制大写表示 Character encoding rule: All characters must be represented in uppercase ASCII hex
• 格式严格性：各字段间无额外分隔符，需严格按固定前缀 + 单据号 + 分隔符 + 操作指令的顺序拼接 Format strictness: No extra separators between fields, must follow the exact order: prefix + document number + separator + command
• 错误处理：若打印机未响应，需检查单据号是否重复、HEX编码是否正确、指令总长度是否符合要求 Error handling: If printer doesn't respond, check for duplicate document numbers, correct HEX encoding, and proper command length
• 建议在打印机空闲时执行重启操作 It is recommended to perform reboot when the printer is idle

指令格式 Command Format

                07 00 + 唯一单据号 + 00 + UPDATE FTP "serverName",port,"userName","pwd","fileName"
                07 00 + Unique Document Number + 00 + UPDATE FTP "serverName",port,"userName","pwd","fileName"
            

字段说明 Field Description

字段 Field	说明 Description	示例 Example
serverName	FTP服务器IP地址或域名 FTP server IP address or domain name	27.159.89.242
port	FTP服务器端口号 FTP server port number	21
userName	FTP登录用户名，支持匿名登录 FTP login username, supports anonymous login	anonymous
pwd	FTP登录密码，支持无密码 FTP login password, supports no password	""
fileName	固件文件名 Firmware filename	KP202_2.4(750,150,128)_GD_MQTT_GPRS_1.07.bin

完整示例 Complete Example

                07 00 201710071107 00 UPDATE FTP "27.159.89.242",21,"anonymous","","KP202_2.4(750,150,128)_GD_MQTT_GPRS_1.07.bin"
                07 00 201710071107 00 UPDATE FTP "27.159.89.242",21,"anonymous","","KP202_2.4(750,150,128)_GD_MQTT_GPRS_1.07.bin"
            

HEX编码示例 HEX Encoding Example

07003230313731303037313130370055504441544520465450202232372E3135392E38392E323432222C32312C22616E6F6E796D6F7573222C22222C224B503230325F322E34283735302C3135302C313238295F47445F4D5154545F475052535F312E30372E62696E220D0A

注意事项 Notes

• 所有字符串参数（serverName、userName、pwd、fileName）必须使用双引号包围 All string parameters (serverName, userName, pwd, fileName) must be enclosed in double quotes
• port参数为数字，不需要引号 The port parameter is numeric and should not be quoted
• 如果使用匿名登录，userName应设置为"anonymous"，pwd可以留空 For anonymous login, set userName to "anonymous" and pwd can be empty
• 确保FTP服务器可以访问，且固件文件存在于指定路径 Ensure the FTP server is accessible and the firmware file exists at the specified path
• 升级前请确保打印机已连接到网络 Ensure the printer is connected to the network before updating
• 升级过程中打印机将自动重启 The printer will automatically reboot during the update process
• 升级过程大约需要2-3分钟完成 The update process takes approximately 2-3 minutes to complete
• 升级过程中请勿断电或断开网络 Do not power off or disconnect the network during the update
• 升级完成后打印机将自动重启并重新连接MQTT服务器 The printer will automatically reboot and reconnect to the MQTT server after the update
• 建议在打印机空闲时执行升级操作 It is recommended to perform the update when the printer is idle