![background image](http://html1.mh-extra.com/html/racal-instruments/1260-100x-x-series/1260-100x-x-series_user-manual_3136933035.webp)
1260-X138 User Manual
Racal Instruments
©
2005
Module Operation 3-7
Table 3-1 Control Register Channel Assignments
Mem Addr
Group
Channels
Relays
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
0x001
0
CH_07 TO CH_00
K14 -- K7
K14
K13
K12
K11
K10
K9
K8
K7
0x003
1
CH_17 TO CH_10
K22 -- K15
K22
K21
K20
K19
K18
K17
K16
K15
0x005
2
CH_27 TO CH_20
K30--K23
K30
K29
K28
K27
K26
K25
K24
K23
0x007
3
CH_37 TO CH_30
K92 -- K85
K92
K91
K90
K89
K88
K87
K86
K85
0x009
4
CH_47 TO CH_40
K100 -- K93
K100 K99
K98
K97
K96
K95
K94
K93
0x00B
5
CH_57 TO CH_50
K108 -- K101
K108 K107 K106
K105
K104
K103 K102
K101
0x00D
6
CH_67 TO CH_60
K123 -- K116
K123 K122 K121
K120
K119
K118 K117
K116
0x00F
7
CH_77 TO CH_70
K131 -- K124
K131 K130 K129
K128
K127
K126 K125
K124
2 WIRE CONFIGURATION
0x011
0XH
37XH - 07XH TO 30XH - 00XH
K38 -- K31
K38
K37
K36
K35
K34
K33
K32
K31
0x013
1XH
47XH - 17XH TO 40XH - 10XH
K46 -- K39
K46
K45
K44
K43
K42
K41
K40
K39
0x015
2XH
57XH - 27XH TO 50XH - 20XH
K54 -- K47
K54
K53
K52
K51
K50
K49
K48
K47
0x017
0XL
37XL - 07XL TO 30XL - 00XL
K62 -- K55
K62
K61
K60
K59
K58
K57
K56
K55
0x019
1XL
47XL - 17XL TO 40XL - 10XL
K70 -- K63
K70
K69
K68
K67
K66
K65
K64
K63
0x01B
2XL
57XL - 27XL TO 50XL - 20XL
K78 -- K71
K78
K77
K76
K75
K74
K73
K72
K71
MUX LINK
0x01D
GROUP MUX6_LINK
TO
MUX0_LINK
K113
N/A
K113 K81
K80
K79
K3
K2
K1
INTERLINKS
K81- K79
K3 - K1
1 WIRE CONFIGURATION
0x01F*
1 WIRE COMS MUX7_COM TO MUX0_COM
K115-K114
K115 K114 K84
K83
K82
K6
K5
K4
K84 - K82
K6 - K4
ANALOG BUS
0x021
Analog Bus
XXXX, ABUS3 TO ABUS0
K112-K109
N/A
N/A
N/A
N/A
K112
K111 K110
K109
N/A => READ <= '1'
WRITE <= '0'.
Notes:
*Memory Address 0x01F is reserved. Do not write to these registers.
Setting a control bit to 1 closes the corresponding channel, and
clearing the bit to zero opens the corresponding channel. Thus, if
you write the value 1000 0101 binary = 133 decimal = 85
hexadecimal to Control Register Group 0, relays K7, K9, and K14
will close, while relays K8, K10, K11, K12, and K13 will open.
The present control register value may be read back by reading an
8-bit value from the control register address.
The value is
inverted.
In other words, the eight-bit value read back is the one’s
complement of the value written.
If you want to change the state of a single relay without affecting
the present state of the other relays controlled by the control
register, you must: