The CHAR step reads a single character and compares this to the expected value. If another character than expected has been received, the reception of this message is aborted and a communication fault is reported. The character received is not treated as part of the user data.
The value may be specified as a single character in double quotes or as a decimal number in the range 0 ... 255. The special value ANY may be specified to make the CHAR step accept any character.