22
4.2.4 Echo
Switch 3-1
determines whether information sent to the printer is echoed back to the host device. This func-
tion can be used to provide error checking at the host device or to relay transmitted data to a second printer or
remote display. This switch is used for serial communications only.
Note: To enable echo in passive de vic es
when using 20 mA current loop please add jumper from 4 to 5 and jumper 18 to 24 then pin 19 is +CL
out and pin 13 is -CL out to passive device. Dip switch 3-1 on for echo on.
4.2.5 Toledo Interface Mode
Switch 3-2
, when set on, enables the Toledo interface mode when connecting the SP2200 to Toledo
in di ca tors. This mode allows the SP2200 to communicate with Toledo indicators and to format weight
information in both standard and weight extraction modes. Shift-in/shift-out (SO/SI) characters are also
supported.
Note: The checksum must be disabled in the Toledo indicator. Placement of text may not be
indentical to the Toledo position of print.
4.2.6 Active 20mA Mode
Active 20mA requires the device to supply current while the other device is passive. To have an active output,
jumper pins 9 and 14.
Figure 4-5 Active 20mA Mode Pin Connection
4.3
Printing Characteristics Switches
Fig ure 4-6 which is shown on page 23, shows the DIP switch es used to set the print ing char ac ter is tics of the
SP2200.
13
12
11
10
9
8
7
6
5
4
3
2
1
25
24
23
22
21
20
19
18
17
16
15
14
- CL Out
+ CL Out
Switch 3-1 on
Echo Active Output
Figure 4-4. Echo Active Output Pin Connection
13
12
11
10
9
8
7
6
5
4
3
2
1
25
24
23
22
21
20
19
18
17
16
15
14
+20mA In
-20mA Out
20mA Active Output
