LG GLOFA-GM Series, Руководство пользователя, Страница: 283 / 358

Chapter 8 Exercising program
8-32
When GLOFA Cnet sends A) Write request frame first, MASTER-K 1000H to respond to this, writes data to
applicable area and sends B) Response frame. Next is TX/RX frame structure.
A) Word Write frame (Cnet’s request : Write request of 10 words in P00 of station 1)
Classification Header
Station
No.
Command Address Number Data Tail BCC
Frame ENQ 05 w P00 0A 20 bytes Data EOT
BCC calculation range
B) Response format to Word Write (Response of MASTER-K 1000H)
Classification Header Station No. Command Tail BCC
Frame ACK 05 w EOT E0
BCC calculation range
Next is for communication frame contents. Refer to the user’s manual of MASTER-K 1000H for more information.
Station No. : Station No. 5 (station No. of MASTERK-1000H)
Command : w (BCC checked in WORD WRITE with the lower case of command)
Address : P00 (P area of MASTER-K 1000H)
Number : 0A (number of HEX data to write in word unit)
Data : Data to write in specified device
BCC : ASCII code sum of HEX data from station No. to tail.
3) Frame edit
Define 2 frames above through Frame Editor.
A) Write request frame : Write request frame as of TX frame is configured to send data via segment in ARRAY
type to defined protocol. Next is Frame Editor screen of transmission frame edited. MK_WR is used for frame
name, and the number of TX data is set to 20 bytes with station No. and constant command in CONST input
to segment 1 and ARRAY variable to segment 2. ARRAY type is set to Convert to convert TX data to ASCII.
As is TX frame, set TX/RX to Send.