Specifications

Appendix Process Images
A - 18
MITSUBISHI ELECTRIC
Control byte C0
A.1.8 SSI Transmitter Interface STL-SSI (ID number 51205057)
Using the SSI Transmitter Interface STL-SSI, a 5 byte input and output process image can be trans-
ferred to the head station via one logical channel.
The data received by the transmitter are stored in 3 input bytes (D0 to D2). Neither the input byte (D3)
and the four output bytes (D0 to D3) nor the control byte (C0) and status byte (S0) are used.
Fig. A-20: Control byte C0 of the STL-C100
Bit Name Description
2 Set output Y1
This bit sets the additional output Y1 of the counter module.
0: Output OFF
1: Output ON
3 Set output Y2
This bit sets the additional output Y2 of the counter module.
0: Output OFF
1: Output ON
4Lock Counter
When this bit is set, the count process is suppressed.
Bit 4 in the status byte S0 indicates the suppression of the counter.
5 Set Counter
When this bit is set, the counter is loaded with the 32 bit value of the output bytes 0 to 3.
As long as the bit is set, the counter is stopped and the loaded value is latched.
The successful loading of the counter is indicated by bit 5 of the status byte S0.
Tab. A-18: Description of the control byte C0 of the STL-C100
Input data Output data
S0 Status byte S0 (Not used) C0 Control byte C0 (Not used)
D0 Process data, byte 0 (LSB) D0
Set to 0. (Not used)
D1 Process data, byte 1 D1
D2 Process data, byte 2 (MSB) D2
D3 Set to 0. (Not used) D3
Tab. A-19: Input and output bytes of the STL-SSI
b7 b6 b5 b4 b3 b2 b1 b0
000/10/10/10/100Control byte C0
This bit must be set to zero.
This bit must be set to zero.
Set output Y1
Set output Y2
Lock Counter
Set Counter
This bit must be set to zero.
This bit must be set to zero.