Memory Allocation (PLC Link)

Memory Allocation (PLC Link)

This section explains allocations for each area including the command area, response area, and output area.

Command Area

PLC to controller (FZ3)

Command area top channel	Bit																Name
Command area top channel	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0	Name
+0																EXE	Control input (2CH)
+1																DSA	Control input (2CH)
+2	CMD-CODE																Command code (2CH)
+3	CMD-CODE																Command code (2CH)
+4	CMD-PARAM																Command parameter (Length changeable)
+5
+6
+7
+8
+9
+10
・・・

Signal	Signal name	Function
CMD-EXE	Command execution bit	Executes commands Command Control
DSA	Data output request bit	Requests the next data output Data Output
CMD-CODE	Command code	Stores command codes
CMD-PARAM	Command parameter	Stores command parameters

Response Area

Controller to PLC (FZ3)

Response area top channel	Bit																Name
Response area top channel	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0	Name
+0															BUSY	FLG	Control output (2CH)
+1																GATE	Control output (2CH)
+2	CMD-CODE																Command code (2CH)
+3	CMD-CODE																Command code (2CH)
+4	RES-CODE																Response code (2CH)
+5	RES-CODE																Response code (2CH)
+6	RES-DATA																Response data (Length changeable)
+7
+8
+9
+10
・・・

Signal	Signal name	Function
CMD-FLG	Command completion bit	Turns on when command execution is complete.
GATE	Data output completion bit	Turns on when data output is complete.
BUSY	Command execution in progress bit	Turns on when command execution is in progress.
CMD-CODE	Command code	Returns the executed command code.
RES-CODE	Response code	Stores the response from the executed command
RES-DATA	Response data	Stores the response data from the executed command

Output Area

Controller to PLC (FZ3)

Output area top channel	Bit																Name
Output area top channel	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0	Name
+0	DATA0																Output data 0
+1	DATA0																Output data 0
+2	DATA1																Output data 1
+3	DATA1																Output data 1
+4	DATA2																Output data 2
+5	DATA2																Output data 2
+6	DATA3																Output data 3
+7	DATA3																Output data 3
+8	DATA4																Output data 4
+9	DATA4																Output data 4
+10	DATA5																Output data 5
+11	DATA5																Output data 5
+12	DATA6																Output data 6
+13	DATA6																Output data 6
+14	DATA7																Output data 7
+15	DATA7																Output data 7

Signal	Signal name	Function
DATA0-7	Output data 0 to 7	The data set in the output processing items is output. When there are multiple processing items, data is overwritten to this area while "handshaking" is performed.