■PZ48L-AV3系列-测试电力参数方法
多功能电力仪表可测量电网中的电力参数有：Ua、Ub、Uc（相电压）；Uab、Ubc、Uca（线电压）Ia、Ib、Ic（电流）；Ps（有功功率）；Qs（无功功率）；PF（功率因素）；Ss（视在功率）；F（频率）以及EP（有功电能）、Eq（无功电能）所有的测量电量参数全部保存仪表内部的电量信息表中，通过仪表的数字通讯接口可访问采集这些数据。而对于不同的型号的仪表，其显示内容和方式却可能不一致，请参考具体的说明。
PZ48L-AV3系列-测试电力参数方法 Types of digital communication: RS485 communication connection MODBUS/RTU communication protocol
Provide serial asynchronous half-work RS458 communication interface, using MOD-BUS-RTU protocol, all kinds of data information can be transmitted on the communication line. Up to 32 network power meters can be connected on one line at the same time. Each network power meter can set its communication address (Address No.). The communication terminal numbers of different series of meters are different. The communication connection should use copper The shielded twisted pair of the net, the wire diameter is not less than 0.5mm. When wiring, you should use communication cables away from strong electric cables or other strong electric fields. It is recommended to use a network connection method, and it is not recommended to use star or other connection methods.
MODBUS protocol adopts the communication connection mode of master-slave response mode on a communication line. First, the signal of the host computer is addressed to a terminal device (slave) with only the address, and then the response signal sent by the terminal device is transmitted to the host in the opposite direction, that is; a signal on a separate communication line All communication data streams are transmitted in two opposite directions (half-duplex working mode).
MODBUS protocol only allows communication between the host (PC, PLC, etc.) and the terminal device, but does not allow data exchange between independent terminal devices, so that each terminal device will not occupy the communication line when they are initialized, and the response arrives The query signal of this machine.
[Synchro Intelligent 舜高智能]
■ 功能特点
显示倍率、通讯地址、波特率等通过面板上按钮可任意设置， 使用非常灵活方便。 所有均可带1路模拟量输出，可选择被测量的变送输出，输出为4~20mA，0~5V，0~12~20mA 等可选。 可选两路报警输出，对被测量参数实现上下限监控。 可带RS-485 数字接口，采用标准MODBUS-RTU 协议。 适用范围广、组合功能强。
数字校零、数字校调，精度高，高。
Mit Spannung, Strom, Leistung, Leistungsfaktor, elektrischen Mess- und Berechnungsfunktionen
Mit 1 Relaissteuerausgang
Mit 2 digitalen Eingängen; kann bis zu 32 digitale SOE-Ereignisse aufzeichnen
Gesamte positive und negative aktive Energie, Akkumulation reaktiver Energie mit vier Quadranten und Energie mit gemeinsamer Zeitverteilung
Drei Spannungs- und Stromungleichgewichte
