Inovance MD500-EN1 - Ethernet;Ip Communication Protocol; Description of I;O Messages Data; Description of Data Transmitted by the Master

3 Ethernet/IP Communication Protocol
- 15 -
3 Ethernet/IP Communication Protocol
3.1 Description of I/O Messages Data
24 I/O Messages are available in the MD500-EN1 expansion card for data transmission,
in which 12 I/O messages transmit data from master station to slave station and another
12 I/O messages transmit data from slave station to master station.
The I/O Messages are used by the master station to modify and read AC drive data in real
time and perform periodic data exchange. Data communication addresses are directly
con󶍾gured by the AC drive. The speci󶍾c functions are as follows:
◆ Real-time setting of AC drive control command and target frequency
◆ Real-time reading of AC drive current state and operating frequency
◆ Function parameter and monitoring data real-time exchange between the AC drive
and Ethernet/IP master station
The I/O Messages data is used for periodic data exchange between the master station
and AC drive, as described in the following table.
I/O Messages (O->T) transmitted by the master
AC drive command AC drive target frequency
Modifying function parameters of
AC drive in real time
Output I/O Messages[0] Output I/O Messages[1] Output I/O Messages[2-11]
I/O Messages (T->O) responded to by the AC Drive
AC drive state AC drive operating frequency
Reading function parameters of
AC drive in real time
AC drive response I/O Messages
(T->O)
Input I/O Messages[1] Input I/O Messages[2-11]
3.2 Description of Data Transmitted by the Master
For details on the data transmitted by the master, see the following table.
Description of data transmitted by the master
I/O Messages0
AC drive command word (command source set to "communication")
00: Stop as de󶍾ned by F6-10 (Stop
mode)
01: Forward running
02: Reverse running
03: Forward jogging
04: Reverse jogging
05: Coast to stop
06: Stop as de󶍾ned by F6-10 (Stop mode)
07: Fault reset
I/O Messages1
AC drive target frequency (frequency source set to "communication") in the
range of reverse frequency upper limit (negative value) to forward frequency
upper limit (decimal places included, for example, 2000 corresponds to 20.00
Hz on the AC drive).
When the set target frequency exceeds this range, the AC drive runs at the
frequency upper limit.