Siemens SINAMICS G120P, Руководство по эксплуатации

Страница: 234 / 496

Operation
6.8 Communication via RS485
Inverter cabinet units
234
Operating Instructions, 12/2014, A5E32923362A
A character delay time is also permitted between the individual bytes of a frame.
Maximum duration: Processing time for 1.5 bytes (can be set via p2024[1]).
Table 6- 20 Baud rates, transmission times, and delays
Baud rate in bit/s (p2020) Transmission time per
character (11 bits)
Minimum pause be-
tween two telegrams
(p2024[2])
Maximum pause be-
tween two bytes
(p2024[1])
4800 2.292 ms ≥ 8.021 ms ≤ 3.438 ms
9600 1.146 ms ≥ 4.010 ms ≤ 1.719 ms
19200 (factory setting) 0.573 ms ≥ 1.75 ms ≤ 0.859 ms
38400 0.286 ms ≥ 1.75 ms ≤ 0.75 ms
57600 0.191 ms ≥ 1.75 ms ≤ 0.556 ms
76800 0.143 ms ≥ 1.75 ms ≤ 0.417 ms
93750 0.117 ms ≥ 1.75 ms ≤ 0.341 ms
115200 0.095 ms ≥ 1.75 ms ≤ 0.278 ms
187500 0.059 ms ≥ 1.75 ms ≤ 0.171 ms
Note
The factory setting for p2024[1] and p2024[2] is 0. The inverter specifies the associated
values depending on the protocol selection (p2030) or the baud rate.
Modbus register and Control Unit parameters
The Modbus protocol contains register or bit numbers for addressing memory. You must
assign the appropriate control words, status words and parameters to these registers in the
slave.
The inverter supports the following addressing ranges:
Addressing range Remark
40001 … 40065 Compatible with Micromaster MM436
40100 … 40522
The valid holding register addressing range extends from 40001 to 40522. Access to other
holding registers generates the fault "Exception Code".
The registers 40100 to 40111 are described as process data.
Note
"R"; "W"; "R/W" in the "Modbus access" column stands for read (with FC03); write (with
FC06); read/write.