ProSoft Technology 3170-PDP - Manual (Page 53)

Configure the Adapter for Master/Slave Communication 3170-PDP ♦ FLEX Platform
FLEX I/O™ PROFIBUS Adapter
ProSoft Technology, Inc. Page 53 of 152
August 23, 2007
Send Parameter Data Flags Byte
Bit Position Name Description
2 to 3 Fault
Action 00 = Reset to zero
01 = Hold Last State
10 = Use Safe State
11 = Reserved
4 Format
Selection 0 = Reset inputs to zero
1 = Hold Last Value
5 to 7 Reserved Reserved bits must be zero
If the send parameter data is received with no user parameter data, the flags
byte is set to zero which selects:
ƒ
auto configure
ƒ reset outputs to zero on fault
ƒ reset inputs to zero on fault
The reserved bits must be set to zero to prevent undesired firmware update
behavior. This is the default behavior of the module as defined in the
PSFT0882.GSD file.
The descriptions in this chapter use the following example FLEX I/O
configuration to explain the information required for each of these functions:
5.2.2 Auto Configure Format
The Auto Configure format allows you to change modules without affecting the
User Parameter or Check Configuration data. This format provides no keying
from the master on the I/O modules installed in the FLEX I/O system. The
installed module at power-up is taken as the key.
If you change a module while it is being controlled by a master, a minor
recoverable fault will occur. To recover from this fault, you must replace the
module with an identical module type.