Panasonic WJ-GXD900 manual Receiving and Sending Serial Data RS-485, Required Settings for RS-485

Receiving and Sending Serial Data (RS-485)

The encoder receives and sends serial data (duplex) as shown in the illustration below.

• In case transmitting characters (ABC123) to a network • In case receiving characters (DEF456) from a network

		RS-485 Device
ETX	Sends 8 byte data including
	STX and ETX to the RS-485
ABC123	data port.
STX
RS-485 data port
	STATUS 1	2	3	4	5	6	7	8
	OPERATE							MPEG2 Encoder WJ-GXE900

RS-485 Device

STX
DEF456					Sends data to a serial data device
					after extracting STX, characters
ETX					and ETX from data received from
					the RS-485 data port.
RS-485 data port
STATUS	1	2	3	4	5	6	7	8
OPERATE								MPEG2 Encoder WJ-GXE900

100BASE-TX

ETX	When the receiving serial data size reaches the
	entered size in the "WAITING DATA SIZE TO SEND
	PACKET" input box on the RS-485 DATA PORT
ABC123
	"WAITING TIMER TO SEND PACKET" input box on
	page or when it has past a longer waiting time for
	receiving data than the entered time in the
	the RS-485 DATA PORT page, the encoder will send
STX	a packet attaching the following data to a network.
UDP	MAC: MAC Address (Destination, Source)
	IP: IP Address (Destination, Source)
IP	UDP: UDP Port No. (Destination, Source)
MAC

100BASE-TX

MAC	Identifies data based on following data.
	MAC: MAC Address (Destination, Source)
IP
	IP: IP Address (Destination, Source)
UDP
	UDP: UDP Port No. (Destination, Source)
STX
DEF456
ETX

Network Network

Required Settings for RS-485

Perform the following settings to receive and send serial data.

•Enter the desired size of the packet to be sent in the "WAITING DATA SIZE TO SEND PACKET (1 - 1024 byte)" input box on the RS-485 DATA PORT page.

The packet will be sent when its size reaches the entered size.

•Enter the desired waiting time to send in the "WAITING TIMER TO SEND PACKET (10 - 1000 ms)" input box on the RS-485 DATA PORT. The packet will be sent when the entered time has passed.

•Enter the desired port number to be used for receiving UDP packets from the network in the "RECEIVING PORT No." input box on the RS-485 DATA PORT page.

When the receiving serial data size reaches the entered size in the "WAITING DATA SIZE TO SEND PACKET" input box on the RS-485 DATA PORT page or when it has reached a waiting time for receiving data longer than the entered time in the "WAITING TIMER TO SEND PACKET" input box on the RS-485 DATA PORT page, the encoder will attach MAC, IP and UDP to the packet and send it to the network.

The received packet from the network will be converted to serial data by deleting MAC, IP and UDP, and then it will be sent to an RS-485 device from the RS-485 data port of the encoder.

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