Mocomtech CDM-QX operation manual Instruction Code, Slot Address

CDM-Qx Satellite Modem	Revision 4
Remote Control	MN/CDMQx.IOM

C.4.2 Address

Up to 9999 devices can be uniquely addressed. The RS-485 base address is set by the front panel; the RS-232 base address is always zero. Each plug-in slot (as viewed from the back of the chassis) has its own address.

Slot	Address
Upper Left	Base
Lower Left	Base + 1
Upper Right	Base + 2
Lower Right	Base + 3

Common functions can be accessed through any of the four addresses. If several devices share a RS-485 bus, it must be noted that the Qx will require four addresses, and should be spaced apart accordingly. Empty slots in the Qx chassis still occupy an address.

	A single CDM-Qx occupies four addresses. For modulator and demodulator
IMPORTANT	grouped as modem, the address will be the same as the modulator.

C.4.3 Instruction Code

This is a three-character alphabetic sequence that identifies the subject of the message. Wherever possible, the instruction codes have been chosen to have some significance.

For example: TFQ for transmit frequency

RMD for receive modulation

This aids in the readability of the message, should it be displayed in its raw ASCII form. Only upper case alphabetic characters may be used (A – Z, ASCII codes 65 – 90).

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