Comtech EF Data CRS-311, Installation And Operation Manual

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CRS-311 1:1 Redundancy Switch Revision 7
Modem, RMI/TMI, and Switch Configuration MN/CRS311.IOM
4–4
Modem has address 0100, and the Redundant Modem uses address 1100. See Figure 4 ‐ 2 and
Appendix C. Addressing Scheme Information
for more information.
Once the addressing scheme is understood, proceed as follows:
Step Task
1
Configure COMMs on each modem via the modem front panel menu as follows:
CONFIG
Æ
REMOTE: RS-485-4W, 9600 baud, format 8-N-1.
2 Set the EIA-485 base address and offset, per Appendix C. Addressing Scheme Information.
See the CDM ‐ Qx Installation and Operation Manual for detailed configuration information.
Figure 4-2. CDM-Qx/QxL / CRS-311 EIA-485 Scheme
In this example, the EIA ‐ 485 offset address does not affect Modem #1, so the offset
can be 1 ‐ 99 without affecting other Modem’s EIA ‐ 485 addresses.