Toyopuc PC3 - Page 21

Toyopuc PC3/PC2 Ethernet Driver
Memory Type Syntax Data Type Access
M000-M07F
M000-M07E
Byte*, Word, Short, BCD
DWord, Long, LBCD
Specific Register (S) S0000.0...S0000.F-S03FF.0...S03FF.F
S0000-S03FF
S0000-S03FE
Boolean
Byte*, Word, Short, BCD
DWord, Long, LBCD
Read/Write
Present Value Register
(N)
N0000.0...N0000.F-N01FF.0...N01FF.F
N0000-N01FF
N0000-N01FE
Boolean
Byte*, Word, Short, BCD
DWord, Long, LBCD
Read/Write
Link Register (R) R0000.0...R0000.F-R07FF.0...R07FF.F
R0000-R07FF
R0000-R07FE
Boolean
Byte*, Word, Short, BCD
DWord, Long, LBCD
Read/Write
Data Register (D) D0000.0...D0000.F-D02FFF.0...D2FFF.F
D0000-D2FFF
D0000-D2FFE
Boolean
Byte*, Word, Short, BCD
DWord, Long, LBCD
Read/Write
File Register (B) B0000.0...B0000.F-B01FFF.0...B1FFF.F
B0000-B1FFF
B0000-B1FFE
Boolean
Byte*, Word, Short, BCD
DWord, Long, LBCD
Read/Write
*Low/High Byte Modifier
An optional Low (L) or High (H) byte modifier can be appended to any address. This modifier instructs the
driver that the low or high byte of the address word is requested. For more information, refer to Addressing
Examples.
Note: When adding a static tag with a low/high byte modifier, the data type must be set to Byte. For more
information on static vs. dynamic tags consult the OPC Server's online documentation.
Multi-Point Read Support
Multi-point read support allows the Toyopuc Ethernet driver to read data from multiple memory types
(based on program number) in a single request. The multi-point read function is available for both the PC3
and PC2 models and can be used across HPC Link or FL-net modules using relay routing. For more
information, refer to Multi-Point Read Support.
Diagnostics Tags
The Diagnostics Tags provide information on how the Toyopuc Ethernet driver is performing. For more
information, refer to Diagnostic Tags.
Array Support
All memory types support arrays, which can be of any data type. Only the following exceptions apply:
1. Byte arrays are not supported (this also means that low/high byte modifiers cannot be used with
array syntax).
2. Boolean arrays are not supported for bit within word type addresses. For example, addresses like
'S0000.0' cannot be used with array notation. Discrete types support Boolean arrays.
3. Multi-point read is not supported for arrays.
The array size cannot exceed the internal block size of 512 bytes. Array syntax is specified by adding '[r]'
(rows) or '[r][c]' at the end of the address string. [r]: rows, [c]: columns.
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