Alfa Instrumentos 6620 Modbus register map

Sources and notes

• Manual de Configuração e Operação - Dosadora a Granel Mod. 6620 · version 0140MN00
  Section 23.1 and the status and fault tables of section 22.5; supplied with the map request

Source: Alfa Instrumentos, Manual de Configuração e Operação, Dosadora a Granel Mod. 6620 (0140MN00), section 23.1 Dados em Modbus TCP

• Modbus TCP on port 502; the data block is 16 registers from 4096 (function 0x03), as figure 130 of the manual shows.
• The manual says the 32-bit values are two words, Lo then Hi (4096 weight Lo, 4097 weight Hi), so the word order is little.
• The weights are integers in kg whose decimals are set on the weighing channel; the manual's example (40 shown as 4.0 kg, 1060 as 106.0 kg) has one decimal, so a scale of 0.1 is used. Change it if the channel is set to another number of decimals.
• Register 4110 holds the status bits and 4111 the faults, as in the tables of section 22.5. Bits 9 to 14 of the status and 11 to 15 of the faults are reserved.
• The date and time registers hold the day, month, year (four digits in the example), hour, minute and second of the selected record.
• The manual's tables are partly low-resolution scans; the register numbers were read from figure 130 and confirmed against the text.