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AHL Instruction Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 82.
Parameter
Channel
AND Mask
•
•
•
OR Mask
•
•
•
Control
(1) The Control data file is the only valid file type for the Control Element.
• OR Mask is the mask used to set the RTS control line. Bit 1
corresponds to the RTS control line. A value of "2" in the OR mask
sets the RTS control line; a value of "0" leaves the line unchanged.
• Control is the control data file. See page 313.
• Channel Status displays the current status (0000 to 001F) of the
handshake lines for the specified channel. This status is read-only
and resides in the .POS field in the control data file. The following
shows how to determine the channel status value. In this example,
the value is 001F.
Channel
15 14 13 12 11 10 9
Status Bit
Handshake
reserved
Control Line
0
0
Setting
Channel
0
Status
Word 2 of the Control Element = 001F
• Error displays the hexadecimal error code that indicates why the ER
bit was set in the control data file. See page 337 for error code
descriptions.
Addressing Modes and File Types can be used as shown below:
(1)
Data Files
•
•
•
•
•
•
•
Instruction Operation
This instruction executes on either a false or true rung. However a
false-to-true rung transition is required to set the EN bit to repeat the
instruction.
8
7
6
0
0
0
0
0
0
0
0
0
1
Function Files
Publication 1763-RM001C-EN-P - October 2009
ASCII Instructions
329
5
4
3
2
1
0
--
--
RTS CTS
0
1
1
1
1
1
F
Address
Address Level
Mode
•
•
•
•
•
•
•
•
•
•
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