RKC INSTRUMENT Z-TIO-G, Instruction Manual

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6. RKC COMMUNICATION
IMS01T28-E4
6-3
(1) Data link initialization
Host computer sends EOT to the controllers to initiate data link before polling sequence.
(2) Data sent from host computer - Polling sequence
The host computer sends the polling sequence in the following two types of formats:

Format in which no Memory area number is specified, and

Format in which the Memory area number is specified.

When no Memory area number is specified
To be sent in this format for any identifier not corresponding to the memory area.

When the Memory area number is specified
To be sent in this format for any identifier corresponding to the memory area.
1. Address (2 digits)
This data is a module address of the SRZ for polled and must be the same as the module address
set value in item
3.1 Module Address Setting (P. 3-2) .
The polling address which transmitted a message once becomes effective so long as data link
is not initialized by transmit and receive of EOT.
2. Memory area number (2 digits)
This is the identifier to specify the Memory area number. It is expressed by K1 to K8 to each Memory
area number (from 1 to 8). If the Memory area number is assigned with K0, this represents that
Control area is specified.
The memory area now used for control is called Control area.
If the Memory area number is not specified when polling the identifier corresponding to the
memory area, this represents that the Control area is specified.
If any identifier not corresponding to the memory area is assigned with a Memory area
number, this Memory area number is ignored.
3. Identifier (2 digits)
The identifier specifies the type of data that is requested from the SRZ. Always attach the ENQ code
to the end of the identifier.
Refer to 8. COMMUNICATION DATA LIST (P. 8-1) .
Identifier Address
Example:
ENQ 1 M 0
1
4. 3. 1.
ENQ
4. 3. 2. 1.
Memory
area
number
Identifier Address
ENQ K
Example:
ENQ S 1 1 K 0 1