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[null," PTH-8L MODBUS-RTU协议说明"]
[{"$nulls":8},"版本号：V0.2"]
["一、硬件接口："]
["    采用RS485或UART-TTL串行接口"]
["    串口参数：波特率：(1200、2400、4800、9600、19200、38600、57600)bps"]
["              数据位：8"]
["              停止位：1"]
["              校验位：无校验、奇校验、偶校验"]
[]
["二、通讯协议："]
["    所有报文格式符合《GBZ  19582.1-2004  基于Modbus协议的工业自动化网络规范  第1部分：Modbus应用协议》           "]
["    根据设备功能，目前设备支持的MODBUS-RTU协议功能码有："]
["        03H：读取保持寄存器；"]
["        06H：预置单个寄存器；"]
["        10H：预置多个寄存器。"]
[]
["三、寄存器地址分配及详细说明表："]
[null,"表1："]
[{"$nulls":3},"寄存器名称","数据类型","寄存器个数","寄存器偏移地址","支持的MODBUS-RTU功能码","备注"]
[]
[null,"只读寄存器",null,"压力格式化输出","有符号整型",1,"0000H","03H","无小数点"]
[{"$nulls":3},"压力整型输出","有符号整型",1,"0001H",null,"小数位数由用户设置"]
[{"$nulls":3},"压力浮点型输出","浮点型",2,"0002H",null,"浮点型低16位"]
[{"$nulls":6},"0003H",null,"浮点型高16位"]
[{"$nulls":3},"压力百分比输出","浮点型",2,"0004H",null,"浮点型低16位"]
[{"$nulls":6},"0005H",null,"浮点型高16位"]
[{"$nulls":3},"特征码","无符号整型",1,"0006H",null,"固定为4C51H"]
[{"$nulls":3},"版本号","无符号整型",1,"0007H",null,"数据格式：xx.x 如：1表示V0.1，10表示V1.0"]
[]
[]
[null,"表2："]
[{"$nulls":3},"寄存器名称","数据类型","寄存器个数","寄存器偏移地址","支持的MODBUS-RTU功能码","备注"]
[]
[null,"用户寄存器",null,"触发采集","无符号整型",1,"0008H","03H、06H、10H","每写一次大于0的值，则触发采集一次"]
[{"$nulls":3},"保留",null,2,"0009H","03H、06H、10H","保留"]
[{"$nulls":6},"000AH"]
[{"$nulls":3},"压力格式化量程零位","有符号整型",1,"000BH","03H、06H、10H","范围：-32768~32767"]
[{"$nulls":3},"压力格式化量程满度","有符号整型",1,"000CH","03H、06H、10H","范围：-32768~32767"]
[{"$nulls":3},"压力小数点位数","无符号整型",1,"000DH","03H、06H、10H","范围：0~4，压力整型输出的小数位数"]
[{"$nulls":3},"压力单位","无符号整型",1,"000EH","03H、06H、10H","00H:Pa   01H:KPa  02H:MPa  03H:mmH2O  04H:mH2O  05H:bar  06H:psi  07H:atm  08H:kgf/cm2   09H:mm   0AH:m"]
[{"$nulls":3},"仪表地址","无符号整型",1,"000FH","03H、06H、10H","范围：1~247"]
[{"$nulls":3},"仪表波特率","无符号整型",1,"0010H","03H、06H、10H","00H:1200  01H:2400  02H:4800  03H:9600  04H:19200  05H:38400  06H:57600"]
[{"$nulls":3},"仪表校验位","无符号整型",1,"0011H","03H、06H、10H","00H:无检验  01H:奇检验  02H:偶检验"]
[{"$nulls":3},"采集间隔","无符号整型",1,"0012H","03H、06H、10H","单位：秒     0：连续采集  ≥43200：触发采集"]
[null,"仪表信息寄存器",null,"仪表型号","无符号整型",5,"0013H","03H","两个字符型，低8位在前"]
[{"$nulls":4},"无符号整型",null,"0014H","03H","两个字符型，低8位在前"]
[{"$nulls":4},"无符号整型",null,"0015H","03H","两个字符型，低8位在前"]
[{"$nulls":4},"无符号整型",null,"0016H","03H","两个字符型，低8位在前"]
[{"$nulls":4},"无符号整型",null,"0017H","03H","两个字符型，低8位在前"]
[{"$nulls":3},"序列号","无符号长整型",2,"0018H","03H","低16位"]
[{"$nulls":6},"0019H","03H","高16位"]
[{"$nulls":3},"制造日期","无符号长整型",2,"001AH","03H","高8位：月，低8位：日"]
[{"$nulls":6},"001BH","03H","年"]
[{"$nulls":3},"压力量程零位","浮点型",2,"001CH","03H","浮点型低16位"]
[{"$nulls":6},"001DH","03H","浮点型高16位"]
[{"$nulls":3},"压力量程满度","浮点型",2,"001EH","03H","浮点型低16位"]
[{"$nulls":6},"001FH","03H","浮点型高16位"]
[{"$nulls":3},"压力量程单位","无符号整型",1,"0020H","03H","00H:Pa   01H:KPa  02H:MPa  03H:mmH2O  04H:mH2O  05H:bar  06H:psi  07H:atm  08H:kgf/cm2   09H:mm  0AH:m"]
[null,"功能操作寄存器",null,"密码","无符号整型",1,"0067H","06H、10H","修改用户寄存器、清零、反清零、用户保存、恢复工厂操作时需要写入密码10H，且60S后自动上锁"]
[{"$nulls":3},"操作码","无符号整型",1,"0068H","06H、10H","01H:系统复位  02H:清零  03H:反清零  0AH:用户保存  \n0BH:恢复工厂"]
["部分指令示例：（当前地址为1）",{"$nulls":3},"备注"]
["读压力整型数010300010001 D5 CA"]
["读压力浮点数010300020002 65 CB",{"$nulls":3},"返回的数据低位在前，高位在后"]
["读压力百分比010300040002 85 CA"]
["触发数据更新指令01060008FF0049F8"]
["压力量程零位0103001C0002 05 CD"]
["压力量程满度0103001E0002 A4 0D"]
["压力量程单位010300200001 85 C0"]
["仪表校验位010300110001 D4 0F"]
["仪表波特率010300100001 85 CF"]
["压力小数点位数0103000D0001 15 C9"]
["采集间隔010300120001 24 0F"]
["密码010600670001 F9 D5"]
["仪表地址0103000F0001 B4 09",{"$nulls":4},"修改仪表地址"]

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