Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 162)

11–8 Configuration: Host Message Format
Publication 2755-833
No-Read Replacement Strings
Field Type Options
Edit Text
Any ASCII Character
String
(32 chars max)
Blank
If the rules are active (See Chapter 10), defines a 1 to 32 character
string to include in the message sent to the host. These strings are
sent when a no-read or a specific host replacement rule is not
satisfied for a specific field (1 through 16). The default is Blank,
which means a no-read replacement string is not defined for that
field. If a no-read does occur, or a replacement rule fails, the default
no-read message (if one is defined) will be sent.