Filter
Top Products
1. PLC Development Environment Using GX Developer
1.4 Creating PLC-related Data
- 33 -
(4) Precautions
No. of characters, quantity limitations, handling of information other than settings, handling of
information other than format.
(a) Message data maximum value
Processing will be carried out with the following values considered as the maximum values if the
setting is not carried out in the setting area, or if the description position in the setting area is
illegal.
Message
classification
Max. message
length
Max. No. of
messages
Alarm messages 32 byte 512
Operator messages 60 byte 512
PLC switches 14 byte 32
Comments 60 byte 100
[Note]
Two-byte data in the message character string is handled as two characters.
GX Developer accepts 64 characters as an interlinear comment. However, since that includes
information other than a message character string (e.g. message classification code, index No.
and data register No.), the message character string is actually up to 58 characters long.
(b) When the setting value and message data do not match
When the message data contents (such as index No, switch No. and message character string)
overflows from the settings in the setting area, the data that overflowed is ignored.