YASKAWA H6B1A002, Technical Reference

Page: 728 / 794

10.5 Metasys N2 Communications
728 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
10.5 Metasys N2 Communications
This section gives detailed information about the parameters, error codes and communication procedures for Metasys
N2 communications.
◆
Configure Master/Slave
You can monitor and control the bypass from a controller on a Metasys N2 network (N2) with RS-485 technology.
The bypasses act as slaves on the N2 network.
A possible maximum of 255 bypasses can communicate on a single N2 network. When more bypasses or N2 devices
are necessary, another N2 network is necessary.
You can use a parameter to set the N2 node address. This gives the physical address of the bypass on the MS-TP
network.
When you set the addressing, a controller can start communication to the bypass. The bypass will do the specified
function and send a response back to the controller.
A - Metasys Field Controller
B - N2 C - Bypasses
Figure 10.10 Connection Example of Multiple Bypasses to a Metasys N2 Network
◆
Communication Specifications
Table 10.12 lists the specifications for the Metasys N2 communications.
Table 10.12 Metasys N2 Specifications
Item Specifications
Interface
RS-485
Communication parameter
Communication speed: 9.6 kbps
Data length: 8 bit (fixed)
Parity: none
Stop bit: 1 bit (fixed)
Communication protocol
Metasys N2
Number of possible units to connect Maximum: 255 units for each N2 network segment
◆
Communication with the Controller
This section explains how to connect the bypass to an N2 network and the network termination required for a
connection.