Installation and Operations Guide
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Initial firmware and operator workstation setup
© Honeywell. All Rights Reserved. LT-VLXEXPAXMIOG Rev. 01
47
Setting EXP/AXM communications speed The EXP/AXM communications
bus is fixed at 76.8 Kbps. Item H on the Change Configuration menu is for
reference only.
Setting PTP options Items for PTP connection are on a sub-menu accessed
through item O on the Change Configuration menu.
The VLX supports direct-connect using the EIA-232 port (male DB-9) on the
lower left of the VLX. The EIA-232 port supports direct connection of a
Compass operator workstation or external modem.
Table 8 MS/TP ne twork se ttings
Item Value Re marks
E. MS/TP Ne twork
Number
1–65,534 Sets the BACnet network numbe r for the
MS/TP LAN. Each inte rconne cte d BACne t
ne twork must have a ne twork numbe r unique
throughout the ne twork. S e le cting a numbe r in
the range 1–65,534 (and not 0) is highly
recommende d for fle xibility and future
compliance .
F. MAC 0-127 Se ts the MAC address of the unit on the MS /
TP LAN. Each BACne t de vice on an MS/TP
LAN mus t have a unique MAC addre s s . VLXs /
ACM-VLXs are shippe d with a default MS/TP
MAC addres s of 0.
G. Kbps 76.8, 38.4, 19.2,
15.2(ACM), 9.6
Se ts the communication spe e d for the MS /TP
LAN .
Table 9 PTP s e ttings
Item Value Re marks
A. PTP Virtual Ne twork
Number
1-65,534 The virtual ne twork number the VLX us e s for
PTP. Mus t be unique . No othe r network can
have this ne twork numbe r on any network
that will inte rconnect. Choos e a unique
numbe r e ve n if PTP is not us e d.
B. Dire ct EIA-252 In
Enabled
Y | N Se t to Y to allow incoming conne ctions . For
e xample , s e t this to Y if you are conne cting
an e xte rnal mode m. S e tting this to N
dis able s incoming PTP data, ye t s till allows
alarm dialout.
C. Dire ct EIA-252 Kbps 9.6, 38.4,
57.6, 115.2
Se ts the transmis s ion s pe e d for EIA-232
communications. Ens ure that s e ttings on the
othe r e nd of the conne ction match.
D. Dire ct Bridge ON | OFF ON allows the de vice to poll the EIA-232 line
for an e xis ting PTP conne ction, typically
use d whe n inte grating with BACne t-
compliant e quipment (chille rs, boile rs , e tc.)
ove r the PTP connection. OFF dis able s the
VLX from polling, but doe s not disable the
port. S e t to OFF if you are conne cting an
e xte rnal mode m.
E. Dire ct s pe ake r ON | OFF Not us e d.
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