Appendix A
A-5
CALCULATE <Checksum>
Addendum A
NOTE: This protocol allows control of routers with levels, for the UDS does
not support levels, if any level is set, then the router will switch, use OO to
make a take. Setting the level to none (use @@), will simply request status of
the cross-point.
Related commands:
MATRIX STATUS REQUEST
CALCULATE <Checksum>
A single-byte checksum in the range 20 hex through 7F hex calculated as
follows:
Start with the hexadecimal value of the first byte (control code). To that value,
Exclusive OR the second byte, Exclusive OR the third byte, etc. until all bytes
have been Exclusive OR’ed. Finally, OR a hexadecimal 20 to the final
Exclusive Or’ed value of all the bytes. By OR’ing in the 20 you ensure that the
checksum is greater than or equal to a hexadecimal 20. This must be done to
ensure an ASCII Control Code is NOT generated as the checksum.
MISC items
The UDS does not allow 7 bit data and no parity.
Unknown sources are reported as 31F
•
SC4 vs UDS:
•
SC4 is 0 relative on sources and destinations, UDS is 1 relative.
•
SC4 switches indexes, UDS switches ports.
SC4 has levels. UDS does not use levels. The RCP1 protocol includes levels.
The UDS will accept any level from he protocol and switch on it. Status is
always reported with all levels set.
Содержание UTAH-100/UDS 10x10
Страница 1: ...UTAH 100 UDS Compact Router Series System Setup and Operation ...
Страница 10: ...x ...
Страница 16: ...vi UTAH 100 UDS Setup Operations Guide ...
Страница 20: ...1 4 System Setup Overview System Diagrams UDS 10x10 UDS 20x20 ...
Страница 21: ...Section 1 1 5 Introduction Section 1 8x32 DA UDS XY ...
Страница 36: ...1 20 System Setup Overview ...
Страница 50: ...2 14 Network Configuration Network Configuration ...
Страница 86: ...3 36 The Router Applet The Router Applet ...
Страница 102: ...4 16 External Control Panel The Control Applet ...
Страница 112: ...A 6 RCP 1 Protocol for UDS RCP1 Protocol for UDS ...