Table 3-1 Hardware Definition Code - Input/Output Type Selection
Value | 0 | 1 | 2 | 3 | 4 | 5 | 7 | 8 |
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Input |
| RTD/ | Thermo- | Linear | Linear |
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| Linear | couple | DC mA | DC V |
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| DC mV |
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Output |
| Relay | SSR | DC | DC | DC | DC | Solid |
1 |
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| Drive | 0 - 10V | 0 - 20mA | 0 - 5V | 4 - 20mA | State |
Output | Not | Relay | SSR | DC | DC | DC | DC | Solid |
2/3 | fitted |
| Drive | 0 - 10V | 0 - 20mA | 0 - 5V | 4 - 20mA | State* |
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* Output 2 only
NOTES:
1.If Output 2 is a relay/SSR drive/solid state output, it may be a control output (COOL), an event output or an alarm output; if it is set to be a DC output, it can only be a control output (COOL).
2.If Output 3 is a relay/SSR drive output (it cannot be a solid state output), it can only be an event output or an alarm output; if it is set to be a DC output, it can only be a recorder (i.e. retransmitted process variable or setpoint) output.
The maximum setting available for this code is 4887. For example, the code for a thermocouple input, DC 4 - 20mA primary output (Output 1) and relay Output 3 would be 2701.
NOTE: It is essential that this code is changed promptly whenever there is a change to the instrument’s hardware configuration (change of input/output type, alarm/recorder output added/removed etc.). The instrument software depends upon this code to ensure that the instrument operates correctly.
This code may be viewed as a Read Only display in Base Mode (see Volume II, Subsection 1.11).
3.3OPTION SELECTION
This indicates the option fitted (Communications Option, Remote Run/Hold option or no option at all). It is accessed whilst the Hardware Definition Code is displayed (see Figure
Volume I |