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GFK-0825F Chapter 8 Datagrams 8-13
8
Discrete Combination Input/Output Modules Configuration Data Format
Specify the actual slot number and a length of 20.
Entering the Reference Addresses
The reference addresses are the locations in the BIU's I, Q, AI, or AQ memory used by the module's
data. In this module configuration only, the input reference is the first non-zero entry WITHOUT the
corresponding bit set in byte 12 (see below) The output reference is the first non-zero entry WITH
the corresponding bit set. In byte 12, bits 4, 5, 6, and 7 define the input reference. For example, if bit
6 of byte 12 is set to 1 and a reference is specified in bytes 8 and 9, inputs for the module will be
mapped to the AI table. Note that the entries must correspond properly, or the BIU will reject the
module configuration. In a normal configuration for a combination discrete module, inputs go to the I
table and outputs go to the Q table. In that case, you enter the input reference in bytes 4/5 and the
output reference in bytes 6/7, and set bit 4 of byte 12 to 1. All other reference address bytes and other
input reference bits (in byte 12) must be set to zero.
unlabelled bit must be 0
B
y
tes 0 to 3 must be: 21 hex, 0,0,0
76543210
Byte 12
Input Default or Hold Last State
(0 = default, 1 = hold last state)
Fault Reporting (0 = enabled, 1 = disabled)
Output Default or Hold Last State
Input Reference is I table
Input Reference is Q Table
Input Reference is AI Table
Input Reference is AQ Table
Bytes 14 to 19: Output Circuit Configuration. For each output, content is:
76543210
Byte 13
reserved (must be 0)
unlabelled bits must be 0
76543210
Output Default State
(0 = off, 1 = on)
76543210
76543210
Byte 4 LSB
MSB
Byte 5
I Reference Address or all zeros
76543210
76543210
Byte 6 LSB
MSB
Byte 7
76543210
76543210
Byte 8 LSB
MSB
Byte 9
76543210
76543210
Byte 10 LSB
MSB
Byte 11
Q Reference Address or all zeros
AI Reference Address or all zeros
AQ Reference Address or all zeros
(Byte #) Byte Description
14
15
16
17
18
19
Output 1 Configuration
Output 2 Configuration
Output 3 Configuration
Output 4 Configuration
Output 5 Configuration
Output 6 Configuration