Rockwell Automation 2706-F11J_F11JC_F21J_F21JC DL50 INSTALLATION MANUAL - Manual (Page 55)

Chapter 5
Serial Communications
5–5
Field 4: Slave Address
The slave address is a single byte field that can be any value from 1- 255,
except for 6, 13,16, and 18. When connecting a DL50 to a DL20/DL40
master, the illegal decimal addresses are: 0, 4, 6, 7, 13, 16, 18, 20, 22, 43, 45,
48-57, and 128-255. A display with an address of 127 will accept all message
packets regardless of the address on the packet. In addition any message
packet with an address of 127 will be received by all displays.
Field 5: Line Number
When the optional bytes (field 1 and 3) are not present, the line number field
specifies on which line(s) the message is displayed. The line number function
depends upon the size of the display (10 or 20 character display) and the line
height (selected by DIP switches). Table 5.D shows the effect of line number
selection on Catalog No. 2706-F11J, -F11JC and Table 5.E shows the effect
of line number selection on Catalog No. 2706-F21J, -F21JC.
Note: Catalog No. 2706-F11J, -F11JC can display one line of ten 4.8 inch
characters or two lines of twenty 2.1 inch characters. Catalog No.
2706-F21J, -F21JC can display one line of twenty 4.8 inch characters or two
lines of forty 2.1 inch characters.
Table 5.D
Line Number Effect On Catalog No. 2706-F11J, -F11JC
Display Mode
Line
Number
Field 5
(Decimal)
Text Displayed On Line
Number:
Character Size
(Inches)
2.1 Inch Text
1
2
3
4
30
1
2
Line Ignored
Line Ignored
1 and 2 ➀
2.1
2.1
Not Applicable
Not Applicable
2.1
4.8 Inch Text
1
2
3
4
30
1 ➁
Line Ignored
Line Ignored
Line Ignored
1 ➁
4.8
Not Applicable
Not Applicable
Not Applicable
4.8
Auto-Select
1
2
3
4
30
1
2
1 ➁
Line Ignored
1 and 2 ➀
2.1
2.1
4.8
Not Applicable
2.1
➀ If the line number is 30, this means that the host is requesting the text to be displayed on both lines 1 and 2. The
first 20 characters are displayed on line 1 and the second 20 characters on line 2. If more than 40 characters are
received, characters 41-80 will be displayed on the second screen, characters 81-120 on the third screen, etc.
➁ If more than 10 characters are sent, the DL50 will Roll the character text from right to left.
Simplex Protocol (continued)