Fuji Electric ALPHA5 Smart - 13.2 PC Loader Communications

CHAPTER 13 RS-485 COMMUNICATIONS
PC Loader Communications 13-39
13
13.2 PC Loader Communications
The transmission and reception commands of the RYHF5-VV2 type servo amplifier are described
in details in this section.
The RYHF5-VV2 type servo amplifier is capable of reading data and writing parameters via serial
communications.
13.2.1 Station Number
The station number to the servo amplifier (parameter PA2_72: station number) setting determines the
station number of the message. After changing the parameter, by shutting down and turning on the
power, the station number will be enabled.
13.2.2 Communication Specifications
SpecificationItem
RS485
Asynchronous, no protocol
Signal level
Synchronization method
Communication method
4-wire type, semi-duplex communication
Transmission code 8 bits
Error control Check sum
Transmission length Reception 128 bytes, transmission 128 bytes (max.)
Transmission
configuration
Start bit: 1 bit
Data bit: 8 bits
Parity bit: 1 bit (even)
Stop bit: 1 bit
Transmission speed 9600/19200/38400bps (Set at parameter PA2_72.)
Transmission format
One-to-n communication (1≦n≦31)
The servo amplifier functions as a slave and responds to master commands.
No communication is made between slaves.
Master
(General-purpose PC)
(General-purpose communication)
Slave 1 Slave 2 Slave 3
Transmission control Transparent mode (No separation with DLE character)
Slave 31
* Some pieces of software do not allow eight data bits and a stop bit simultaneously.
Response time
Operation command: Within 100ms
Data (parameter) transfer: Within 100ms
Connection cable LAN cable (straight) or equivalent
Terminator treatment
On master side: 100 [Ω] recommended. Slave side: Unnecessary
Station No. 1 to 31 (Set at PA2_73.)
Total wiring length 500m
RS485 Communication Specification
RS-485 Communications Specifications
Specifications
One-to-n communications
(
1≤n≤1
)
The servo amplifier functions as a slave and responds to master commands.
N
o communications are made between slaves.
Master
(General-purpose PC)
(General-purpose communications)
RS-485
9600/19200/38400/115200 bps (Set at parameter PA2_73.)
500 m
100 ms
100 ms
On master side: 100 Ω recommended. Slave side: Unnecessary
It is recommended to use the RS-232C - RS-422 converter (model: NW0H-CNV) for the use of 1:1
communications between the master and the slave (servo amplifier). Do not use it for multiple unit connection.