M1XSP Installation Manual
Page 9
RS-485
Not Used
To M1 Control Data
Bus Terminals
+VKP A B Neg
ADDRESS
Only Addresses 1, 2, 3, or 4
can be used with HAI Stats.
Address 1 shown (Switch 1 on).
MODE
HAI = 1010 **
1
0
BAUD
OmniStat 1 = 300 Baud
OmniStat 2 = 2400 Baud
Shorting plug on
top pins = 1,
bottom pins = 0.
Address
1 2 4 8
ELK-M1XSP
Interface
1
0
1 2 3 4
RS-232
ON
232 485
JP1
JP2
JP3
+12V A B Neg
JP5
Jumper JP3
must be in 232
position.
BAUD MODE
Four (4) pin "COMM" plug
(supplied with HAI OmniStat. )
HVAC
SYSTEM
Hold
<
Prog
>
Mode Fan
HAI
OMNISTAT
TSTAT #1
TSTAT #2
TSTAT #3
TSTAT #4
Shorting Plug
MUST be placed
on these two pins
for HAI Omnistats
.
S1 S2 S3
S5 S6 S7 S8
S5 S6 S7 S8
** Older M1XSP units won't have the S5 and/or S4 Jumpers
BL
K
RE
D
GR
N
YEL
BLK
WHT
RED
YEL
BLK
GRN
RED
GRN
Up to 4 OmniStats
per M1XSP
Term. Block or Wire Splicers
Wiring Diagram for OmniStat 1 Series
Part # ELK-WO46A - DB9 4-conductor
serial cable for M1XSP
RS-485
Not Used
To M1 Control Data
Bus Terminals
+VKP A B Neg
ADDRESS
Only Addresses 1, 2, 3, or 4
can be used with HAI Stats.
Address 1 shown (Switch 1 on).
MODE
For HAI
set to 1010 **
1
0
Address
1 2 4 8
ELK-M1XSP
Interface
1
0
1 2 3 4
RS-232
ON
232 485
JP1
JP2
JP3
+12V A B Neg
JP5
Jumper JP3
must be in 232
position.
BAUD MODE
Part # ELK-WO46A - DB9 4-conductor
serial cable for M1XSP
TSTAT #1
TSTAT #2
TSTAT #3
TSTAT #4
Shorting Plug
MUST be placed
on these two pins
for HAI Omnistats
.
S1 S2 S3
S5 S6 S7 S8
S5 S6 S7 S8
BL
K
RE
D
GR
N
YE
L
BLK
WHT
RED
YEL
BLK
GRN
RED
GRN
Up to 4 OmniStats
per M1XSP
Term. Block or
Wire Splicers
OmniStat 2
OmniStat 2
OmniStat 2
Red
Yellow
Green
Black
N/C
Black
Green
Yellow
Red
Green
Black
Remote
Sensor
Comm
Remote
Temp
Remove jumper between N/C and Black terminals.
Black wire goes to N/C
Red wire goes to Black
Grn wire goes to Green
Yel wire goes to Yellow
*Pictured with
Thermostat
removed
(backplate only)
Wiring Diagram for OmniStat 2 Series
BAUD
OmniStat 1 = 300 Baud
OmniStat 2 = 2400 Baud
Shorting plug on
top pins = 1,
bottom pins = 0.
** Older M1XSP units won't have the S5 and/or S4 Jumpers
** IMPORTANT: Remove Jumper J8
ON back of Omnistat 2 (if present)
