10.5 Metasys N2 Communications
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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
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.
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