Chapter 9 Communication instructions
188 Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
Symbolic data type support
The following table lists the data types that the MSG_CIPSYMBOLIC function
block supports.
Data type Data type value (hexadecimal) Description
BOOL 193 (0xC1) Logical Boolean with values TRUE (1) and FALSE (0)
SINT 194 (0xC2) Signed 8–bit integer value
INT 195 (0xC3) Signed 16–bit integer value
DINT 196 (0xC4) Signed 32–bit integer value
LINT 197 (0xC5) Signed 64–bit integer value
USINT 198 (0xC6) Unsigned 8–bit integer value
UINT 199 (0xC7) Unsigned 16–bit integer value
UDINT 200 (0xC8) Unsigned 32–bit integer value
ULINT 201 (0xC9) Unsigned 64–bit integer value
REAL 202 (0xCA) 32–bit floating point value
LREAL 203 (0xCB) 64–bit floating point value
Symbolic Read/Write syntax
Syntax is the set of rules that defines the combinations of symbols that comprise a
valid read/write function block.
Valid symbol names
To be valid, each symbol name must meet the following requirements.
• Begin with a letter or underscore character followed by a letter, digit, or
single underscore character.
• Be 40 characters or less.
• Not contain two consecutive underscore characters.
• Use special characters [ ] . , as separators.
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