Microscan MS-5000, User Manual, Page: 59 / 94

Serial Commands
MS-5000 Multidrop Concentrator User’s Manual
4-7
4–Oper
a
ti
ons.
Format: 51<Kf protoco,address >CR
Example: To change the Protocol to Multidrop with an address of 33, enter
51<Kf5,33>CR .
If selecting User Defined (6) or User Defined Multidrop (7), you must com-
plete the format by either choosing new parameters or entering commas for
unchanged data fields.
Format: 51<Kf
protocol,address,RES,REQ,STX,ETX,ACK,NAK , EOR,XON,
XOFF,RES,REQ,STX,ETX,ACK,NAK,EOR,EOF,XON,XOFF >CR
Format: < Kf protocol,RES,address,REQ,EOT,STX,ETX,ACK,NAK>
protocol:
7 = User Defined Multidrop
Example: To select an unpolled ACK/NAK User Defined protocol with LRC
disabled enter 51<Kf0><Kf6,,,,,,,^F,^U><Kc0>CR .
1
ACK and
NAK will be displayed in the menu.
2
Note : Address, can be assigned any ASCII character except a null. Control
characters are used to define RES through NAK (except Address). Table 4-3
lists the control characters used for these data fields. (Refer to Table A-1,
“ASCII Table with Control Characters,” on page A-3 for more information.)
Protocol:
5 = Multidrop
Address:
Any number from 1 to 50.
1. The <Kf0> nulls the address and the <Kc0> disables LRC.
2. A control character, although conventionally represented here and in the ASCII table in appendix B as
two characters (^F or ^U, etc.), is actually a single ASCII character which is entered on the keyboard by
holding down the control key while pressing the desired letter.
Table 4-3 Protocol Commands
Protocol Command
(Mnemonic displayed on
Microscan menu)
Control Characters
(Entered in menu or
serial command)
Effect of Command
RES ^D Reset
REQ ^E
Request
EOT ^D Reset
STX ^B
Start of Text
ETX ^C
End of Text
ACK ^F
Acknowledge
NAK ^U Negative Acknowledge