Comtech EF Data OMS11 - Manual (Page 70)

OMS11 1:1 Redundancy Switch Appendix B
TM133 – Rev. 1.1 B- 7
= This byte identifies the message type associated with the
information data. The equipment processes the
data according to the value in this field. Return
error codes and acknowledgment are also included in
this field. (2 bytes)
<...DATA...>
= Information data. The number of data bytes in this field is
indicated by the value.
= The modulo 256 sum of all preceding message bytes excluding
the character. (1 byte)
The DMD15 RLLP is not software-compatible with the following previous Radyne
products: RCU5000 and DMD4500. These products may not occupy the same bus
while using this protocol as equipment malfunction and loss of data may occur.
When transmitting a packet at 9600 baud, the Remote M&C should ensure
that the timeout value between characters does not exceed the time it takes to transmit
200 characters (
≈
200 msec). If this timeout value is exceeded, the equipment will
timeout.
Regular Commands
Opcode <2000h>
Query OMS11 Device Identification
Query Response Data Field (1 byte):
<1>
Device Identification 26 decimal for OMS11
Opcode <2080h>
Query OMS11 Device Firmware Version
Query Response Data Field (19 bytes):
<1>
Device Firmware Version MSB binary number, implied decimal point
<1> Device Firmware Version LSB binary number, implied decimal point
<10> Device Firmware Name null terminated string
<7> Device Firmware Release Date null terminated string
Opcode <2280h>
Command OMS11 Load Factory Defaults
Command Data Field (2 bytes):
<1>
Unlock Code 1 0x55
<1> Unlock Code 2 0xAA